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Letteratura scientifica selezionata sul tema "Golo River"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 10 febbraio 2022

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Articoli di riviste sul tema "Golo River"

Sweet, Michael L., Gwladys T. Gaillot, Gwenael Jouet, Tammy M. Rittenour, Samuel Toucanne, Tania Marsset e Michael D. Blum. "Sediment routing from shelf to basin floor in the Quaternary Golo System of Eastern Corsica, France, western Mediterranean Sea". GSA Bulletin 132, n. 5-6 (29 ottobre 2019): 1217–34. http://dx.doi.org/10.1130/b35181.1.

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Abstract How and when sediment moves from shallow marine to deep-water environments is an important and poorly understood control on basin-scale sediment dispersal patterns, the evolution of continental margins, and hydrocarbon exploration in deep-water basins. The Golo River (Eastern Corsica, France), its delta, canyons, and fans provide a unique opportunity to study sediment routing from source to sink in a relatively compact depositional system. We studied this system using an array of high-frequency seismic data, multi-beam bathymetry, and five cores for lithology and age control. Movement of sediment to deep water was controlled by interactions between the Golo River, the Golo Delta, and shelf-penetrating submarine canyons. Sediment moved to deep water when lobes of the Golo Delta prograded to the heads of these canyons, or when the Golo River itself flowed directly into one of them. Sand accumulated in canyons, deep-water channels, and submarine fans during glacial periods of low sea level, while mud was deposited throughout the slope, in the relatively short reach of leveed-confined channels, and in the mud-rich fringes around the sandy fans. During interglacial periods of high sea level, the basin was blanketed by mud-rich deposits up to 10 m thick interbedded with distinctive carbonate-rich sediments. Deposition rates in the basin ranged from 0.07 m/ka to 0.59 m/ka over the last 450 ka. Mud deposition rates remained relatively constant at ∼0.16 m/ka during all time periods, while sand deposition only happened during glacial periods of low sea level with an average rate of 0.24 m/ka. In addition to sea-level controls on sediment delivery, avulsions of the Golo River and its deltaic lobes preferentially routed sediment down either the North or South Golo canyons. Thus, while the larger, sequence-scale architecture of the basin is controlled by allogenic sea level forcing, millennial-scale autogenic processes operating on the shelf and in deep water shaped the distribution of sand and mud, and the internal geometry of the deltas and submarine fans that they fed. While some aspects of the Golo system are characteristic of steep, tectonically active margins, others such as the nature of connections between rivers and shelf-penetrating submarine canyons are observed in most margins with active submarine fans regardless of their tectonic setting.

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Molliex, Stéphane, Gwenael Jouet, Pierre-Henri Blard, Julien Moreau, Julie Demartini, Joep E. A. Storms, Claude Vella e Aster Team. "Quaternary evolution of the Golo river alluvial plain (NE Corsica, France)". Quaternary Geochronology 61 (febbraio 2021): 101115. http://dx.doi.org/10.1016/j.quageo.2020.101115.

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Forzoni, Andrea, J. E. A. Storms, Tony Reimann, Julien Moreau e Gwenael Jouet. "Non-linear response of the Golo River system, Corsica, France, to Late Quaternary climatic and sea level variations". Quaternary Science Reviews 121 (agosto 2015): 11–27. http://dx.doi.org/10.1016/j.quascirev.2015.04.021.

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Liu, Rui Ping, You Ning Xu, Jiang Hua Zhang, Hua Qing Chen, He Fang, Xian Li, Hai Ling Ke e Gang Qiao. "Accumulation and Environmental Risk on Heavy Metal Pollution in Bottom Sediments of Surface Waters in Xiao Qinling Gold Mine Belt, China". Advanced Materials Research 773 (settembre 2013): 862–68. http://dx.doi.org/10.4028/www.scientific.net/amr.773.862.

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Heavy metals accumulation in river sediments can reflect the environmental quality of river waters. Its of practical significance to study the accumulation level of heavy metals in river sediments and its environmental risk. this thesis study on the heavy metals accumulation in river sediments of three typical river of Xiao qinling gold mine area, and the results showed that the mercury, lead , zine, cadmium and copper elements are characteristic contaminations, respectively. In Shuangqiao river, the average values of mercury, lead , copper and zine were 94·72, 25.34, 3388.67, 376.77 and 675.90 mg·kg-1, the five elements show the larger variety in tong river and Shuangqiao river than the oher five rivers. respectively. The environmental risk assessment by using geoaccumulation index (Igeo) indicated that these seven rivers a high-very high rank environmental risk of heavy metals accumulation in river sediments, the environmental risk probability orders of seven river sediments is Tong river > Shuangqiao river> Xijian river > Yiluo river> Sha river > Zaoxiang river> Yangping river . and there was highest environmental risk in Eolian loess area. So There are the probability of achieving higher risk than now if local government wouldnt Adopt effectively manage measure river to rivers.

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Boguslavskiy, M. A., e S. O. Khudyakov. "Characteristics of native gold at Kosumnerskoe placer gold deposit (the Nether-Polar Urals)". Proceedings of higher educational establishments. Geology and Exploration, n. 5 (2 novembre 2018): 24–30. http://dx.doi.org/10.32454/0016-7762-2018-5-24-30.

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The paper presents the results of a study of heavy mineral concentrates of Kosumnerskoe gold deposit as well as the native gold from them. This gold deposit includes two gravel deposits. The granulometric composition, morphology, roundness, flatness, presence of intergrowths of gold with other minerals, as well as the character of the surface, the chemical composition and internal structure of gold, have been investigated. Based on these results, the placer gold of rivers Narta-Yu and Nester-Shor has been concluded to be similar in morphology, chemical composition and internal structure so it allows attributing them to a single type of motherload, which could be named as gold-polysulfide-quartz type. On the results of the analysis of two gold deposits of this field, the gravel deposit of the river Nester-Shor has been concluded to be elder than gravel deposit of the river Narta-Yu.

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Giusti, L. "The morphology, mineralogy, and behavior of u "fine-grained" gold from placer deposits of Alberta: sampling and implications for mineral exploration". Canadian Journal of Earth Sciences 23, n. 11 (1 novembre 1986): 1662–72. http://dx.doi.org/10.1139/e86-154.

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The morphology of a large number of gold grains from stream sediments of the North Saskatchewan River and the Athabasca River was studied, together with the partitioning of the placer gold between various size fractions.Two major morphological varieties of gold were observed: (1) flaky, scaly gold, with folded and hammered edges, and with crystals or crystal faces still visible on the surface; and (2) "sandwiched," droplike particles, sometimes toroidal. About 5% of both types of gold were found to be coated with "new," secondary gold.The size of the majority of the gold grains studied varies between 0.500 and 0.010 mm. The most frequent size range in the North Saskatchewan River is 0.125–0.250 mm, whereas in the Athabasca River it is 0.063–0.125 mm. An important fraction of the gold from both rivers is smaller than 0.063 mm.The average Corey shape factor (CSF) of the gravity-recovered gold increases as the particle size decreases, whereas the gold grains lost to the tailings indicate very low average shape factors (i.e., high degree of flattening). This apparent increase in CSF for the smallest fractions recovered when using mechanical techniques is due to the fact that the flaky gold particles are more difficult to recover than the more spherical ones. Moreover, the presence of a gold-rich rim on all the gold grains increases their hydrophobicity.The sampling procedure to be adopted in Alberta and, more generally, in glaciated terrains is discussed. In particular, the use of the −63 μm fraction for routine sampling of stream sediments is suggested.

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Ali, Munawar, Suhartoyo Hery e Suci Asriani Putri. "Mercury toxicity potential from artisanal and small scale gold mines in Lebong Regency, Bengkulu Province". E3S Web of Conferences 73 (2018): 06002. http://dx.doi.org/10.1051/e3sconf/20187306002.

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Artisanal and small scale gold mining (ASGM) is considered as the largest source of mercury pollution worldwide. The ASGM has been practiced for years in the area of Lebong Regency of Bengkulu Province. To extract gold from the ores, miners use a simple technique called Gelondong. This practice involves amalgamation process which forms amalgam, a mixure composed of mercury and gold. These amalgamation generates liquid and solid wastes (tailings) which still contain significant amount of mercury. Consequently, ASGM activities can potentially create mercury contamination of the environment, especially aquatic ecosystems. This study was aimed to investigate the concentration and distribution of total mercury in rivers to which wastes from ASGM communities in three villages of North Lebong District were dumped. Water and streambed sediments along the rivers were collected and brought to the laboratory for total mercury analysis. Data showed that total mercury was not detected in the river water but high in the river sediments with high variations among lactions from 0.11 to 110.37 mg kg-1. Apparently, total mercury tended to decrease with the distance from it source. High amounts of mercury in the river sediments could potentially spread to wider area and cause bioaccumulation in aquatic organisms, especially fish which can be dangerous to consume.

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Lawrence, Susan, James Grove, Peter Davies, Jodi Turnbull, Ian Rutherfurd e Mark Macklin. "Historical dredge mining as a significant anthropomorphic agent in river systems: A case study from south-eastern Australia". Holocene 31, n. 7 (25 marzo 2021): 1158–74. http://dx.doi.org/10.1177/09596836211003272.

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Bucket dredging to mine and extract gold and tin from rivers is a global industry that has had a range of negative effects on physical environments. These include the destruction of riparian soil profiles and structures, artificial channel straightening and loss of in-stream biodiversity. In this paper we evaluate the immediate effects and long-term consequences of bucket dredging on rivers in Victoria and New South Wales during the period 1900–1950. High quality historical sources on dredge mining are integrated with geospatial datasets, aerial imagery and geomorphological data to analyse the scale of the dredging industry, evidence for disturbance to river channels and floodplains and current land use in dredged areas. The study demonstrates that the environmental impact of dredging was altered but not reduced by anti-pollution regulations intended to control dredging. An assessment of river condition 70–100 years after dredge mining ceased indicates that floodplains and river channels continue to show the effects of dredging, including bank erosion, sediment slugs, compromised habitat and reduced agricultural productivity. These findings have significant implications for river and floodplain management.

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Taylor, G., R. Howes, L. Dulvenvoorden e V. Vicente-Beckett. "Downstream flow event sampling of acid mine drainage from the historic Mt Morgan Mine". Water Science and Technology 45, n. 11 (1 giugno 2002): 29–34. http://dx.doi.org/10.2166/wst.2002.0376.

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Numerous scientific reports concur that the Dee River is heavily impacted by acid mine drainage from the historic gold and copper mine at Mt Morgan, Central Queensland. The water quality along the Dee River, for 18 km downstream of the mine site to its junction with Fletcher Creek, is characterised by low pH, typically 2.8 to 4.2. With respect to metal concentrations, the Dee River has been described as one of Australia's most polluted rivers. Measurements of pH along the Dee River clearly demonstrated the movement of a slug of acidic water down the river during each of the four flow events between November 2000 and February 2001. Laboratory analysis of water samples collected during November indicated Al, Cu and Zn concentrations orders of magnitude above ANZECC guidelines. Fish kills occurred with each flow event and killed an estimated total of 26,000 fish.

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Borovec, Zdeněk. "Toxic Elements in River Sediments: Case Study Elbe and Its Tributaries". Geografie 100, n. 4 (1995): 268–75. http://dx.doi.org/10.37040/geografie1995100040268.

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Concentrations of 34 chemical elements in river sediments of Elbe and its tributaries were determined with help of instrumental neutron activation analysis, atomic absorption spectrophotometric method and some other specialized methods. Only particles smaller than 0.063 mm were examined. The results were compared with the local geochemical background. River sediments showed significantly high share of silver, gold, cadmium, copper, mercury, zinc, lead, arsenic, selenium, molybdenum, chromium, antimony, and tin. Sediments of Vltava, Jizera, Bílina, and Ploučnice rivers are the most polluted ones; on the other hand, Cidlina, Doubrava, and Chrudimka rank among the cleanest rivers. The degree of urbanization and industrialization play an important role, as well as the use of agricultural fertilizers. The influence of increased denudation as a result of acid pollutants has been recorded on some places, too.

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Tesi sul tema "Golo River"

Skyles, Emilee M. "Alluvial Geochronology and Watershed Analysis of the Golo River, Northeastern Corsica, France". DigitalCommons@USU, 2013. https://digitalcommons.usu.edu/etd/2045.

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The Golo River in Corsica, France, is a short, steep river (~95 km, 2706 m relief) in the Western Mediterranean with formerly glaciated headwaters. The small size and location of the Golo River make this system ideal for observing the influence of climate and sea-level change on river dynamics over the 100,000 years. A rapidly advancing dating technique, optically stimulated luminescence, was utilized to determine the timing of these river deposits on the coastal plain in order to frame them in the context of previous glacial and interglacial episodes. Climate fluctuations in the headwaters supplied the vast majority of sediment into the system during glacial time periods, which was then transported and deposited near the mouth of the Golo River on the coastal Marana Plain. Sea- level also played a vital role in defining a geometric configuration that ultimately governed whether large amounts of sediment stored onshore or offshore. Analysis of the Golo River longitudinal profile and watershed reveals changes in steepness and gradient that are related to changes in rock type, fault movement and tectonically-driven base-level fall.

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Morse, Kathryn Taylor. "The nature of gold : an environmental history of the Alaska/Yukon gold rush /". Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/10468.

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McGowan, Krista I. "Geochemistry of alteration and mineralization of the Wind River gold prospect, Skamania County, Washington". PDXScholar, 1985. https://pdxscholar.library.pdx.edu/open_access_etds/3586.

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The Wind River gold prospect is located in TSN, R7E of Skamania County, Washington, and is an epithermal gold-quartz vein system hosted in volcanic rocks of the Ohanapecosh Formation, a late Eocene to middle Oligocene unit of calcalkaline chemical composition. Andesitic pyroclastic rocks of the Ohanapecosh Formation are the host of mineralization in the study area, and form the lowest of several stratigraphic subunits. These pyroclastic rocks are overlain by two sequences of lava flows which cap the ridges and are folded by an anticlinal warp over the length of Paradise Ridge, plunging gently to the southeast. Toward the west, the number of flows decreases and the proportion of intercalated pyroclastic rocks increases. Numerous dikes cut the pyroclastic rocks at the Wind River prospect. Geochemical data show these dikes to have been feeders for the overlying lava flows. Differing degrees of alteration of the dikes relative to the most intensely altered pyroclastic rocks which they cut indicates a complex history of overlapping hydrothermal and volcanic activity at the prospect.

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Bornstein, Sara. "Women of the 1898 Alaska-Klondike Gold Rush". Diss., Connect to the thesis, 2009. http://hdl.handle.net/10066/3588.

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Knight, John Bruce. "A microprobe study of placer gold and its origin in the lower Fraser River drainage basin, B.C". Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/24829.

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The compositions, in terms of Au, Ag, Cu, and Hg, of about 1200 placer and lode gold grains from the Fraser River drainage were determined by microprobe analysis. The lode samples are from the Bralorne and Cariboo Gold Quartz mines. Seventeen placer samples are from the Cariboo district and the Bridge River, Fraser River and their tributaries. Bralorne gold and many placer grains contain Hg which ranges up to 6%. Evidence is presented to show that this Hg is primary. Placer gold grains also contain Cu, ranging up to 31%, but high-Cu gold has little Ag or Hg. The compositional data were used to define populations on Hg-Cu-Fineness plots for each sample location. A comparison of the populations shows that placers located near lodes reflect these sources but that simple downstream transport of the gold cannot explain the populations found far from known sources. In order to explain the population found in downstream placers it is necessary to postulate contributions from undiscovered lodes, fossil placers, or other unknown sources. Many placer grains from the Fraser River have rims that are nearly pure gold. The rimming is thought to have taken place in an "intermediate collector" (fossil placer?) by leaching of Ag. Rimmed gold is not found in the Bridge River. From the data on the composition of the gold one is able to divide the Fraser River drainage into two metallogenic provinces: a Cu-Hg-rich province that includes the Bridge River drainage and a Cu-Hg-poor province typified by the Cariboo region. The data from the lode deposits suggest that the deposits can not only be uniquely characterized but that it may be possible to distinguish zoning within the lodes. In addition, it appears that much of the Cu- and Hg-rich gold is associated with ultrabasic rocks and major faults.
Science, Faculty of
Earth, Ocean and Atmospheric Sciences, Department of
Graduate

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Day, Stephen John. "Sampling stream sediments for gold in mineral exploration, southern British Columbia". Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/27869.

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The problems encountered by mineral explorationists when sampling stream sediments for gold were investigated by considering the sparsity of free gold particles and their tendency to form small placers at certain locations in the stream bed. Fourteen 20-kg samples of -5-mm sediment were collected from contrasting energy and geochemical environments in five streams draining gold occurrences in southern British Columbia. The samples were sieved to six size fractions (420 µm to 52 µm) and gold content was determined by neutron activation analysis following preparation of two density fractions using methylene iodide. Gold concentrations were converted to estimated number of free gold particles and the Poisson probability distribution was used to show that much larger field samples (>100 kg of -1 mm screened sediment) would be required to reduce random variability due to nugget effects to acceptable levels. However, in a comparison of conventional sampling methods, the lowest probability of failing to detect a stream sediment gold anomaly is obtained using the sampling method described in this study. Small-scale placer formation was investigated by collecting twenty 60-kg samples of -2-mm sediment from ten locations along five kilometres of Harris Creek in the Okanagan region, east of Vernon. Samples were prepared and analysed as described above though heavy-mineral concentrates were only prepared for two size fractions. Gold was found to be considerably enriched in sandy-gravel deposits compared to sand deposits, with the effect decreasing as sediment size decreased. The level of enrichment varies on the stream in response to changing channel slope and local hydraulic conditions. Gold anomaly dilution is apparent in sand deposits but not apparent in sandy-gravel deposits since gold is preferentially deposited in gravels as channel slope decreases. These results are presented in the framework of H.A. Einstein's sediment transport model. Sediment collected from gravels may represent the best geochemical sample since placer-forming processes produce high gold concentrations, however in very high energy streams, the small quantities of fine sediment in gravels may lead to unacceptable nugget effects. In the latter case, a sample collected from a sand deposit is a satisfactory alternative.
Science, Faculty of
Earth, Ocean and Atmospheric Sciences, Department of
Graduate

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Ramessar, Candice Rowena. "Water is More Important than Gold: Local Impacts and Perceptions of the 1995 Omai Cyanide Spill, Essequibo River, Guyana". Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/34552.

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Improved technologies, increases in global demand for metals, and lax environmental policies and regulations are causing a shift of large-scale mining activities to the tropics. This shift of mining to the tropics has the potential to modify natural ecosystems and disrupt the social structures of rural and indigenous peoples in some of the most remote areas of the planet. This thesis encompasses research done in two villages of Guyana's Essequibo River basin after the 1995 Omai cyanide spill, and illustrates the local social consequences of a large-scale gold mining operation in the tropics. It documents not only the degradation of the local river ecology, but also the changes in local people's perceptions of their environment. That environment, once viewed as pristine, is now viewed as unsafe, leading to disrupted livelihoods and lifestyles. The finding of this study points to a direct link between international economic liberalization policies (which emphasize privatization, foreign direct investment, and economic growth) and the creation of disaster circumstances in developing countries. This thesis research is the result of a total of ten weeks of participant observer research in the area of the Essequibo River, Guyana. It utilizes the methodology of taped interviews of head-of-households. Interviews were conducted with approximately 85 percent of heads-of household of the villages of Rockstone and Riversview. Additionally, interviews were conducted with national and regional governmental officials, regional health officials, local and indigenous leaders, personnel of the Guyana Geology and Mines Commission, and the Environmental Protection Agency in Guyana. Interviews were supplemented with archival research. The findings of this thesis research closely mirror those of other researchers who contend that the social impacts of technological disasters are long-term and more severe than those related to natural disasters. Seven years after the cyanide spill, disruptions in livelihood activities, diet, and household behaviors continued to be evident in the two villages. There is little indication that the high negative perceptions of the villagers as a result of the disaster will change in the near future. The research found that macroeconomic policies, crafted by national governments and overseen by international financial institutions without the involvement of local citizenry, disproportionately affected the poor and rural populations through the degradation of local ecosystems. The thesis also illustrates the usefulness of ethnographic research-in particular, interviews in disaster studies of developing countries.
Master of Science

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Kwiatkowski, Derrick A. "The prediction of a modern gold mine's contaminant dispersion and deposition in a river mixing zone". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0016/MQ54512.pdf.

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MacKenzie, Douglas James, e n/a. "Structural controls on orogenic gold mineralisation in the Otago Schist, New Zealand and the Klondike Schist, Canada". University of Otago. Department of Geology, 2008. http://adt.otago.ac.nz./public/adt-NZDU20080704.085108.

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Orogenic gold mineralisation in schist terranes with few or no contemporaneous igneous intrusions is poorly understood. It is proposed in this thesis that the structural evolution of such terranes controls the generation of hydrothermal fluid pathways and thus the location of orogenic mineral deposits. Gold mineralisation in the Otago Schist, New Zealand and the Klondike Schist, Canada occurred in the latter phases of greenschist facies metamorphism as well as after metamorphism during Paleozoic-Mesozoic exhumation. In Otago, gold mineralisation occurred at a number of different times and structural levels as the schist belt was exhumed and rocks were brought up through the brittle-ductile transition. In Klondike Schist, gold mineralisation occurred in relatively brittle rocks after a period of regional compression and crustal shortening caused by the stacking of thrust sheets. Gold mineralisation in both schist belts is not associated with any coeval igneous activity. The earliest stage of gold mineralisation in the Otago Schist occurred in the Jurassic when mineralising fluids were progressively focussed into late metamorphic ductile shear zones such as the Hyde-Macraes Shear Zone (HMSZ), east Otago and Rise and Shine Shear Zone (RSSZ), central Otago. Both of these gold-bearing mineralised zones occur along mappable structural discontinuities or boundaries that separate structurally, metamorphically and lithologically distinct blocks. The HMSZ occurs in the hangingwall of an underlying low angle normal fault that juxtaposes mineralised lower greenschist facies rocks on to unmineralised upper greenschist facies rock. The RSSZ occurs in the footwall of an overlying low angle normal fault that juxtaposes unmineralised lower greenschist facies rocks on to mineralised upper greenschist facies rock. The two shear zones did not form as part of a single homogeneous structure. There are several other prospective late metamorphic boundaries that are different from later brittle faults that disrupt the schist. Late metamorphic gold mineralisation is characterised by both ductile and brittle structures, foliation-parallel shears, disseminated gold with sulphides in deformed schist and minor steeply dipping extensional veins. This style of mineralisation is the most prospective but can be subtle in areas without quartz veins. Hydrothermally altered rocks are enriched in gold, arsenic, tungsten and sulphur with minor enrichment of bismuth, antimony, mercury and molybdenum. Disseminated mineralisation in the HMSZ is associated with hydrothermal graphite however there is no hydrothermal graphite in the RSSZ. The next stage of gold mineralisation occurred in the Cretaceous during post-metamorphic exhumation of the schist belt and is characterised by steeply dipping, fault-controlled quartz veins, silicified breccias and negligible wall rock alteration. Most post-metamorphic veins strike northwest such as the ~25 km long Taieri river gold vein swarm, but there are other stibnite and gold mineralised structures that strike northeast (e.g., Manuherikia Fault system) and east-west (e.g., Old Man Range vein systems). The latest recognised stage of gold mineralisation is controlled by structures related to the initiation of the Alpine Fault in the Miocene and is characterised by steeply dipping quartz veins with abundant ankeritic carbonate in veins and ankeritic carbonate with gold in altered rocks. Hydrothermally altered rocks are enriched in arsenic, carbon dioxide and sulphur with minor enrichment of antimony. Gold-bearing veins at Bullendale, central Otago are of this type and are associated with a broad alteration zone. Gold-silver and gold-silver-mercury alloys occur in both Caples and Torlesse Terranes of the Otago Schist. Almost all mercury-bearing gold occurs in east Otago vein systems and mercury-free gold occurs in central and northwest Otago veins, irrespective of host terrane. There is no relationship between depth of vein emplacement and mercury content of gold. The Klondike Schist was emplaced as a series of stacked thrust slices in the Jurassic and thrust-related fabrics are preserved in all thrust slices. Strongly deformed carbonaceous schist horizons are spatially associated with thrust faults and graphite within these units is concentrated along spaced cleavage surfaces. Kink folding is best developed in the uppermost slices of Klondike Schist and overprints thrust-related fabrics. Gold-bearing veins formed in extension fractures controlled principally by pre-existing weaknesses such as kink fold axial surfaces. Normal faults correlated with a period of Late Cretaceous regional extension crosscut kink folds and offset gold mineralised veins. The main stage of mineralisation occurred after major regional compression and thrust stacking and before Cretaceous normal faulting. Gold-bearing veins are widely dispersed throughout the uppermost slices of Klondike Schist and are considered to be a sufficient source for Klondike gold placer deposits. Disseminated gold with pyrite is associated with gold-bearing veins in some Klondike Schist and this disseminated mineralisation expands the exploration target for these veins. Disseminated gold with pyrite, without quartz veins, occurs in some schist lithologies and is associated with chlorite alteration and weak silicification. The arsenic content of gold-mineralised Klondike Schist is much lower than mineralised Otago Schist and background concentrations of arsenic are much lower in Klondike Schist as well. No shear-related mineralisation has been discovered in Klondike Schist but due to its relatively poor exposure, this belt remains prospective for this style of mineralisation.

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McCluskey, Kara M. "Using reclaimed water for golf course irrigation to improve water resource management in the Lower Arkansas River Basin". Thesis, Kansas State University, 2015. http://hdl.handle.net/2097/19053.

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Master of Science
Civil Engineering
David R. Steward
With an increasing population, municipalities in the United States are struggling to secure safe, reliable water sources for future water demands. Alternative water sources are being considered to improve the overall water management picture. Wastewater reuse, reusing wastewater effluent for beneficial purposes, is an alternative water source that is gaining popularity in the United States. In this study a theoretical framework was developed to enable a region to quickly assess the feasibility of reusing wastewater for irrigation needs. Three criteria were established for the framework; they are, regulations and guidelines for reuse, adequate flow ratio, and cost benefit analysis. As a region moves through the framework and criteria a list of feasible wastewater facilities and end users are established. A model was developed for the cost benefit analysis based on regional input. As regulatory frameworks and economic factors evolve over time the model can be updated to assess how these changes will affect water reuse in a region. The model will provide a useful tool for a region to integrate wastewater reuse into the water resource management process. The Lower Arkansas River Basin (LARK) was highlighted by the Kansas Water Office as a region that should investigate the role of reuse in water conservation. Results from this report indicate 963 million gallons per year (MG/yr) of wastewater effluent could feasibly be used to irrigate 9 hole and 18 hole golf courses in the region. The results determined that any 18 hole golf course within a 15.9 mile radius of a wastewater treatment facility in the LARK could payback the capital costs for wastewater reuse within 10 years. This information is a useful tool for the region to start the discussion for implementing wastewater reuse in the region. The results from this report indicate wastewater reuse for golf course irrigation is economically feasible in the LARK. Establishing a safe reliable water source for the future is paramount to the future of Kansas. Future research is needed to determine how the wastewater diversion affects the environmental balance of the permitted discharge location.

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Più fonti

Libri sul tema "Golo River"

Gold! Gold from the American River! New York: Roaring Brook Press, 2011.

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Sanborn, Margaret. The American River. Moose, Wyo: Homestead Pub., 1998.

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Paine, Lauran. Greed at Gold River. Bath: Chivers, 1994.

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Paine, Lauran. Greed at Gold River. Bath: Chivers, 1994.

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ill, Hearn Diane Dawson, a cura di. Gobo and the river. New York: Holt, Rinehart and Winston, 1985.

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Drouillard, Joanne. Hidden River Golf Club. London, Ont: Ivey Publishing, 2000.

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Smith, Wilbur A. River god & gold mine. London: Pan Books, 2005.

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Paine, Lauran. Greed at Gold River. Thorndike, Me: Thorndike Press, 1994.

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Rivers of gold. New York: St. Martin's Press, 1991.

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Reasoner, J. L. Rivers of gold. New York: Jove, 1995.

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Capitoli di libri sul tema "Golo River"

Singh, Abhay Kumar, e Soma Giri. "Subarnarekha River: The Gold Streak of India". In Springer Hydrogeology, 273–85. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-2984-4_22.

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Geenen, Sara, e Simon Marijsse. "The Democratic Republic of Congo: From Stones in the River to Diving for Dollars". In Global Gold Production Touching Ground, 263–81. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-38486-9_14.

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Ben Houidi, Zied, Giuseppe Scavo, Samir Ghamri-Doudane, Alessandro Finamore, Stefano Traverso e Marco Mellia. "Gold Mining in a River of Internet Content Traffic". In Traffic Monitoring and Analysis, 91–103. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-54999-1_8.

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Brayshaw, Steven, e Charles Lemckert. "Pitfalls of Shoreline Stabilisation – Tweed River Mouth, Gold Coast, Australia". In Pitfalls of Shoreline Stabilization, 1–13. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-4123-2_1.

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Viaroli, Pierluigi, Gianmarco Giordani, Marco Bartoli, Mariachiara Naldi, Roberta Azzoni, Daniele Nizzoli, Ireneo Ferrari et al. "The Sacca di Goro Lagoon and an Arm of the Po River". In The Handbook of Environmental Chemistry, 197–232. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/698_5_030.

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Kostianoy, Andrey G., Sergey A. Lebedev e Dmytro M. Solovyov. "Satellite Monitoring of the Caspian Sea, Kara-Bogaz-Gol Bay, Sarykamysh and Altyn Asyr Lakes, and Amu Darya River". In The Handbook of Environmental Chemistry, 197–231. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/698_2013_237.

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Liu, Rui-Ping, You-Ning Xu e Jiang-Hua Zhang. "The Relationship and Influencing Factors Water-Gas Interface Mercury Emission Flux and Water Suspended Mercury of a Gold Mining Area River". In Sustainable Development of Water Resources and Hydraulic Engineering in China, 407–15. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-61630-8_35.

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Carlson, Jon D. "West Africa and the Rise of Asante: Rivers of Gold, a Short Route to China, and the Globalization of Labor". In Myths, State Expansion, and the Birth of Globalization, 75–113. New York: Palgrave Macmillan US, 2012. http://dx.doi.org/10.1057/9781137010452_3.

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Gkiolmas, Aristotelis S. "Integrating Struggles for Environmental Justice into the Curriculum: A Critical Pedagogy Viewpoint (*three Case Studies from Greece: The Keratea’s Sanitary Landfill, the Chalcidice’s Gold Mines and the Struggle Regarding Asopos River)". In Towards Critical Environmental Education, 67–85. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-50609-4_5.

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Lechler, P. J. "Modern Mercury Contamination from Historic Amalgamation Milling of Silver-Gold Ores in the Carson River, Nevada and Jordan Creek, Idaho: Importance of Speciation Analysis in Understanding the Source, Mobility, and Fate of Polluted Materials". In Mercury Contaminated Sites, 337–55. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-662-03754-6_18.

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Atti di convegni sul tema "Golo River"

Yaagoubi, Amina El, Ahmed El Hilali Alaoui e Jaouad Boukachour. "Multi-objective river-sea-going container barge stowage planning problem with container fragility and barge stability factors". In 2018 4th International Conference on Logistics Operations Management (GOL). IEEE, 2018. http://dx.doi.org/10.1109/gol.2018.8378102.

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Manuc, G., D. Popescu e D. Jianu. "Heavy Minerals Association from Gold Placers Found on Aries River, Romania". In 74th EAGE Conference and Exhibition incorporating EUROPEC 2012. Netherlands: EAGE Publications BV, 2012. http://dx.doi.org/10.3997/2214-4609.20148904.

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Yang, Yangfan, Pingbin Jin e Huiwen Gong. "A comparative study of golf industry between Yangtze River Delta, China and Central Japan". In ADVANCES IN ENERGY SCIENCE AND ENVIRONMENT ENGINEERING II: Proceedings of 2nd International Workshop on Advances in Energy Science and Environment Engineering (AESEE 2018). Author(s), 2018. http://dx.doi.org/10.1063/1.5029733.

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Rui-ping Liu, You-ning Xu, Jiang-hua Zhang, Fang He, Hua-qing Chen, A-ning Zhao, Hai-ling He, Gang Qiao, Dong-ying Xu e Ming-zhong Kang. "Evaluation of heavy metals contamination in sediments of Shuangqiao River, Xiaoqinling gold belt, China". In 2011 International Symposium on Water Resource and Environmental Protection (ISWREP). IEEE, 2011. http://dx.doi.org/10.1109/iswrep.2011.5893595.

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Colombi, Francesco, Ewen Silvester, Darren Baldwin, Aleicia Holland, Susan Lawerence, Peter Davis, Jodi Turnbull, Ian Rutherford e Mark Macklin. "Legacy Arsenic Contamination from Historical Gold Mining on the Floodplains of South Eastern Australia River". In Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.462.

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Gang Qiao, Youning Xu, Fang He, Jianghua Zhang e Aning Zhao. "Influence of river water pollution on the groundwater in TongGuan gold mine area, Shaanxi province". In 2011 International Symposium on Water Resource and Environmental Protection (ISWREP). IEEE, 2011. http://dx.doi.org/10.1109/iswrep.2011.5893303.

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Ruhl, Laura, Maryevalyn Wren e Erik D. Pollock. "GOLD KING MINE SPILL: EFFECTS ON THE WATER AND SEDIMENT QUALITY IN THE ANIMAS RIVER". In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-285852.

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Roberts, Scott W., e Marcie Bidwell. "AN EVALUATION OF IMPACTS TO ANIMAS RIVER BENTHIC MACROINVERTEBRATE COMMUNITIES FROM THE GOLD KING MINE RELEASE". In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-286800.

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Juliansyah, A., S. Zulaikah, N. Mufti, E. Y. Agustin, R. Pujiastuti e B. H. Iswanto. "Magnetic susceptibility of river sediment in polluted area of traditional gold mining in Kuris Sumbawa Indonesia". In INTERNATIONAL CONFERENCE ON ELECTROMAGNETISM, ROCK MAGNETISM AND MAGNETIC MATERIAL (ICE-R3M) 2019. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0016519.

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Lamorena-Lim, Rheo B., Ericho M. Fuentes e Elmer S. Austria Jr. "Assesment of Potential Chemical Speciation of Dissolved Heavy Metals in a River-based Gold Mining Site using PHREEQC". In Annual International Conference on Chemistry, Chemical Engineering and Chemical Process. Global Science & Technology Forum (GSTF), 2015. http://dx.doi.org/10.5176/2301-3761_ccecp15.10.

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Rapporti di organizzazioni sul tema "Golo River"

Abercrombie, S. M. Geology of the Ketza River Gold Mine. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/132334.

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Plouffe, A., e S. P. Williams. Regional till geochemistry, gold and pathfinder elements, northern Nechako River, British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1998. http://dx.doi.org/10.4095/210023.

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Poulsen, K. H., e F. Robert. Disseminated gold mineralization in the Stewart River area, La Ronge Domain, Saskatchewan. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1994. http://dx.doi.org/10.4095/193818.

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Pelletier, M., P. Mercier-Langevin, B. Dubé, V. Bécu, K. Lauzière e M. Richer-Laflèche. Whole-rock lithogeochemistry of the Archean Rainy River gold deposit, western Wabigoon, Ontario. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2016. http://dx.doi.org/10.4095/299356.

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McGowan, Krista. Geochemistry of alteration and mineralization of the Wind River gold prospect, Skamania County, Washington. Portland State University Library, gennaio 2000. http://dx.doi.org/10.15760/etd.5469.

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Averill, S. A. Discovery and delineation of the Rainy River Gold Deposit using glacially dispersed gold grains sampled by deep overburden drilling: a 20 year odyssey. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2017. http://dx.doi.org/10.4095/300290.

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Harris, D. C., e S. B. Ballantyne. Characterization of gold and PGE-bearing placer concentrates from the North Saskatchewan River, Edmonton, Alberta. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1994. http://dx.doi.org/10.4095/194107.

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Killeen, P. G., B. E. Elliott e C. N. Aoki. Borehole geophysical logs in Meguma gold occurrences, Nova Scotia (Beaver Dam, Moose River and Lake Charlotte areas). Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1998. http://dx.doi.org/10.4095/209376.

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Clague, J. J. Quaternary Stratigraphy and History of Quesnel and Cariboo River Valleys, British Columbia: Implications For Placer Gold Exploration. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/132488.

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