Carlin Trend Unconformity

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Gold From United States

Newmont Mining Corporation and Barrick Gold Corporation operate several large mines on the prolific Carlin Trend or Carlin Unconformity which is one of the worlds richest mining districts Gold Standard Ventures is currently exploring the Railroad project on the southern portion of the Carlin Trend within the historic Bullion Mining District

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FACT SHEET Newmont USA Limited dba Newmont Mining

at the northern end of the Carlin trend General Description This site is in post-closure monitoring The site consists of one and a lower tuff unit within the Buttercup/Carlin Formation all of which An angular unconformity separates the older and younger bedded volcanic units the older beds dip 10 to 30 degrees southeast and the

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Ironwood Gold Corp (fka IROG) Message Board

Apr 11 2019The Carlin Unconformity or Carlin Trend is a geologic feature in northeastern Nevada which represents a period of erosion or non-deposition likely associated with a collision between a tectonic crustal block called a terrane and the North American Plate

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Gold mining in Nevada

The Carlin Trend part of what is also known as the Carlin Unconformity is 5 miles (8 km) wide and 40 miles (60 km) long running northwest-southeast has since produced more gold than any other mining district in the United States The trend surpassed 50 000 000 troy ounces (1 600 t) of gold in 2002

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Gold mining in Nevada

The Carlin Trend part of what is also known as the Carlin Unconformity is 5 miles (8 km) wide and 40 miles (60 km) long running northwest–southeast has since produced more gold than any other mining district in the United States Production from the trend surpassed 50 000 000 troy ounces (1 600 t)

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Carlin Trend Hydrogeology

Gold extraction along the Carlin trend requires large withdrawals of ground water which can be perched unconfined at shallow depth and (or) confined at depth Five hydrogeologic units—Quaternary basin-fill sediments Tertiary basin-fill sediments and sedimentary rocks Tertiary volcanic rocks Devonian to Ordovician siltstones and Devonian to Ordovician carbonate rocks—form the

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Geochemical Perspectives Letters

) as some indirect evidence has been found in natural systems For example it has been suggested that hydrocarbons may have contributed to the transport of gold in the Carlin-type deposits in Nevada (Emsbo and Koenig 2007 Emsbo P Koenig A E (2007) Transport of Au in petroleum evidence from the northern Carlin trend Nevada

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ALTERATION OF THE BOOTSTRAP LIMESTONE NORTHERN

The Carlin trend is a 60 km-long northwest-trending linear alignment of approximately 42 disseminated gold deposits located in northeastern Nevada (Figure 1) The trend contains 5 000 Mt of gold and contributes ~9% of the world's annual gold production with

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What is the Carlin Trend?

Jun 18 2016The Carlin Unconformity or Carlin Trend is a geologic feature in northeastern Nevada which represents a period of erosion or non-deposition likely associated with a collision between a tectonic crustal block called a terrane and the North American Plate The collision occurred during the Mississippian Period about 350 million years B P

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Gold mining in Nevada — Wikipedia Republished // WIKI 2

The Carlin Trend part of what is also known as the Carlin Unconformity is 5 miles (8 km) wide and 40 miles (60 km) long running northwest-southeast has since produced more gold than any other mining district in the United States The trend surpassed 50 000 000 troy ounces (1 600 t) of gold in 2002

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Evolution of Devonian carbonate

Partly restored base map of northern and central Nevada showing plot of Lower Devonian isopachs (thin brown lines contour interval is 100 m) Sr i (87 Sr/ 86 Sr) = 0 706 isopleth crustal affinity (fields defined by bold gray lines) trends of Carlintype gold deposits (bold dashed gold lines Battle Mountain–Eureka trend is southwestern line Carlin trend is northeastern line) and approximate present outcrop extent

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The Ventures

Gold Standard Ventures bucked the trend rallying after releasing additional information on leases it entered into (originally announced on March 28 2012) with various land holders encompassing approximately 4 128 net mineral acres of land adjacent to the company's flagship Railroad gold project in Elko County Nevada

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Eocene Igneous Geology and Relation to Mineralization

Athabasca Basin (Canada) Unconformity-Type Uranium Deposits Exploration Model Current Mine Developments and Exploration Directions $ 10 00 Add to cart The Drewsey-Juntura Graben a Middle to Late Miocene Synvolcanic Graben Malheur and Harney county Oregon $ 10 00 Add to cart

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Carlin Unconformity

GSV TSX-V $1 13 Nevada-focused gold explorer Gold Standard Ventures announced Thursday that recent drilling has significantly expanded the gold envelope along the North Bullion Fault Zone (NBFZ) on its Railroad Project Carlin Trend Nevada Phase 1 drilling results extend the 1-3 g/t envelope of gold mineralization at NBFZ to the north and to the south by more than ~500 m confirming

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Interview with an Exploration Geologist

Jun 15 2018What are a few of the trends that you see in the future of Mineral Exploration? Atoka Gold Carlin Trend gold Interview Nevada premium Athabasca unconformity uranium deposits RIRG's (reduced intrusive related gold) deposits and layered mafic intrusion Ni-Cu-PGM deposits With Oil and Gas his experience is primarily in the Madison

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carlin unconformity dfinition de carlin unconformity et

The Carlin Unconformity or Carlin Trend is a geologic feature in northeastern Nevada which represents a period of erosion or non-deposition likely associated with a collision between a tectonic crustal block called a terrane and the North American Plate

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Elephants in the Nevada Desert Carlin

Jun 20 2014The Carlin trend is a 5 mile wide and 40 mile long corridor that is also referred to as the "Carlin Unconformity" Although the Carlin trend was discovered first several other "carlin-type" trends were identified soon after including the Getchell and the Battle Mountain-Eureka trends

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A handful of ExplorerCo standouts in Nevada—the mother of

Nevada map courtesy of the Junior Stock Review shows three distinct trends Carlin along the top right The Carlin Trend is legendary The 26 mines peppered across the region have produced more than 84 million ounces of gold with an additional 31 million ounces in the reserve category It's believed that the trend was formed roughly 350 million years ago when a chunk of the Earth's crust collided with the

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The Carlin Trend Gold Deposits in Nevada

The Carlin Unconformity History of Carlin A collision of tectonic crustal block and the North American Plate occurred around 350 million years ago and this collision created the temperatures and pressure which produced the geologic forces that made Carlin-type gold possible

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Oxide gold mineralization intercepted over a 5km

Carlin-style gold system similar in many ways to the prolific deposits located along Nevada's Carlin trend Like Kinsley Mountain and Newmont's Long Canyon deposit Goldstrike represents part of a growing number of Carlin-type systems located off the main Carlin and Cortez trends in largely underexplored parts of the Great Basin

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Carlin Nevada

Newmont discovered the worlds first submicroscopic or invisible gold at Carlin Nevada in the early 1960s the Carlin Trend or Carlin Unconformity is the largest gold discovery in North America during the 20th century In 1971 Newmont began using the heap leaching technology on

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Carlin Type Gold Deposit

Carlin deposits are named after the little settlements of Carlin in Northeastern Nevada which is situated on the linear deposits that make up the Carlin trend where this type of deposit was first identified and where the majority of the gold currently mined in the US is derived from

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GEOLOGY OF SEDIMENTARY ROCK

the Carlin trend area these structures are high-angle faults associated folds or tectonic windows (see Poole 1991 Prihar and others 1996) which are oriented parallel or perpendicular to the main trend or primary lineament High-angle faults are generally considered to playing a key role in ore-control in these deposits (Togashi 1992) Christensen

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Carlin–type gold deposit

Pyrite - Carlin Unconformity - Gold mining in Nevada - Sediment - Gold - Arsenopyrite - Nevada - Arsenic - Antimony - Mercury (element) - Thallium - Barium - Hydrothermal circulation - Silt - Carbonate rock - Silicate minerals - Carbonate minerals - Dolomite (mineral) - Jasperoid - Clay minerals - Feldspar - Great Basin - American Geosciences Institute - Ore - Ore genesis

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The Athabasca Uranium Rush

The total value of Athabasca's uranium deposits is on the order of US$30 billion (1 5 billion pounds of U308) putting the region on par with the world's major mining districts-Nevada's Carlin trend (US$35 billion at US$300 per ounce gold) and Ontario's Timmins Camp

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May 2018 Focused on Discovery

samples indicate Carlin-type pathfinders are anomalous in most altered rock types and structures where sampled at Adobe Carlin-5 (As Hg Sb Tl S) The highest Arsenic values occur within silicified and hematite altered conglomerates of the Elko Formation and along the Perm/ Miss Unconformity within

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Mine d'or — Wikipdia

L'un des derniers grands gisements est le Carlin Unconformity (ou Carlin Trend ) une formation gologique dcouverte au Nevada (tats-Unis) en 1961 Plus rcemment la Guyane et le Surinam ont aussi connu des afflux d'orpailleurs et l'arrive de quelques grands groupes

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Top 10 Biggest Gold Mines In The World

Jan 15 2019Carlin Trend or Carlin Unconformity of Nevada in the United States is owned by Newmont Mining Corporation The mine has two open pits and underground mines Newmont started operations at this mine in 1965 though gold was first discovered here in the 1870s By 2002 Newmont controlled nearly eight thousand square kilometers of land

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Synthrusting deposition of the Pennsylvanian and Permian

At Beaver Peak near the Carlin Trend of gold deposits it contains synorogenic conglomerate deposits associated with emplacement of a regionally extensive 1-km-thick tectonic wedge that is floored by the Coyote thrust Normal marine conodont biofacies throughout the Strathearn Formation suggest middle shelf or deeper depositional environments

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Carlin Trend

Resources and reserves on the Carlin Trend exceeded 31 million ounces of gold as of 2015 (Barrick 2016 and Newmont 2016) Gold continues to be found on this productive trend Recent developments in the northwest and central parts of the trend include the discovery of the Arturo deposit significant expansion of the Leeville and Turf deposits development of the Exodus and Pete Bajo deposits and

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Carlin – Geological Society of Nevada

Carlin Cortez Trends – Comparisons Contrasts (Elko Chapter) $ 10 00 – $ 20 00 Select options Comparison Between the Lennard Shelf MVT Province of Western Australia and the Carlin Trend of Nevada Implications for Genesis and Exploration $ 10 00 Add to cart

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Elephants in the Nevada Desert Carlin

Jun 18 2016The Carlin Unconformity or Carlin Trend is a geologic feature in northeastern Nevada which represents a period of erosion or non-deposition likely associated with a collision between a tectonic crustal block called a terrane and the North American Plate The collision occurred during the Mississippian Period about 350 million years B P

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