4 edition of The Upper Triassic Greens Creek VMS (volcanogenic massive sulfide) deposit and Woewodski Island VMS prospects, southeastern Alaska found in the catalog.
The Upper Triassic Greens Creek VMS (volcanogenic massive sulfide) deposit and Woewodski Island VMS prospects, southeastern Alaska
by U.S. Dept. of the Interior, U.S. Geological Survey in [Menlo Park, CA]
Written in English
|Other titles||Chemical and isotopic data for rocks and ores demonstrate similarity of these deposits and their host rocks|
|Statement||by Rainer J. Newberry and David A. Brew|
|Series||Open-file report -- 97-539, U.S. Geological Survey open-file report -- 97-539|
|Contributions||Brew, David A, Geological Survey (U.S.)|
|The Physical Object|
|Number of Pages||49|
The corresponding series is known as the Upper Triassic. In the past it was sometimes called the Keuper, after a German lithostratigraphic group (a sequence of rock strata) that has a roughly corresponding age. The Late Triassic spans the time between ~ Missing: VMS. In other regions of Italy Upper Triassic source rocks are, by contrast, wholly carbonate and were deposited in both comparatively deep-water basins and shallow-water intra-platform anoxic lagoons. In the latter lagoonal settings, oil-prone stromatolitic “algal coals” often by:
Big Sore, Zinc Creek, Mariposite Ridge, Upper Killer Creek, Killer Creek, Cliff Creek, Big Bend, Gallagher Creek: Related records: Geographic coordinates. TRIASSIC AGE FOSSIL DISCOVERED IN UNDERGROUNG WORKINGS DECEMGER , USGS MAY REEVALUATE THE LITHOLOGY OF THE FORMATION. EIS GREENS CREEK pp. Deposit. EA GREENS. Described here are all hardrock mining exploration projects in Alaska that had onsite exploration between and Active prospects and claims without significant current exploration activity were omitted, but number in the hundreds. Placer mining is also not included and .
The objective was to provide control data for analysis of the Stikine Airborne Geophysical Survey, and to provide characteristic geophysical signatures to allow geologists to identify the Triassic terranes in the region that could potentially host more Volcanogenic Massive Sulfide ("VMS") deposits like the huge Greens Creek VMS deposit on. Author Thornber, Carl R. Title HVO/RVTS a prototype remote video telemetry system for monitoring the Kilauea east rift zone eruption, / by Carl R. Thornber.
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The Upper Triassic Greens Creek VMS (volcanogenic massive sulfide) deposit and Woewodski Island VMS prospects, southeastern Alaska chemical and isotopic data for rocks and ores demonstrate similarity of these deposits and their host rocks. The Upper Triassic Greens Creek VMS (volcanogenic massive sulfide) deposit and Woewodski Island VMS prospects, southeastern Alaska: chemical and isotopic data for rocks and ores demonstrate similarity of these deposits and their host rocks.
the upper triassic greens creek vms (volcanogenic massive sulfide) deposit and woewodski island vms prospects, southeastern alaska: chemical and isotopic data for e rocks and ores indicate similarity of these deposits and their host rocks.
Abstract. The Glacier Creek volcanogenic massive sulfide (VMS) deposit, Alaska, is hosted within Late Triassic, oceanic back-arc or intraarc, rift-related bimodal volcanic rocks of the allochthonous Alexander terrane, known as the Alexander Triassic metallogenic belt.
The Alexander Triassic metallogenic belt is host to the world-class Greens Creek Cited by: 3. The Upper Triassic Greens Creek VMS (volcanogenic massive sulfide) deposit and Woewodski Island VMS prospects, southeastern Alaska: chemical.
Precious Metal Enrichment at the Myra Falls VMS Deposit, British Columbia, Canada by Daniel Marshall 1,*, Carol-Anne Nicol 1, Robert Greene 1, Rick Sawyer 2, Armond Stansell 2 and Ross Easterbrook 3Author: Daniel Marshall, Carol-Anne Nicol, Robert Greene, Rick Sawyer, Armond Stansell, Ross Easterbrook.
The Greens Creek deposit is a series of massive sulfide bodies that lie along the contact between altered mafic-ultramafic rocks and stratigraphically overlying Upper Triassic argillites.
Both the. Together they have created a book in which the riches of Triassic life are presented with clarity, scientific accuracy, and imaginative recreation. Every lover of the life of the past will treasure Dawn of the Dinosaurs.
The Amazon Book Review Author interviews, book reviews, editors' picks, and more. Cited by: Newberry, R.J., and Brew, D.A.,The Upper Triassic Greens Creek VMS (volcanogenic massive sulfide) deposit and Woewodski Island VMS prospects, southeastern Alaska; chemical and isotopic data for rocks and ores demonstrate similarity of these deposits and their host rocks: U.S.
Geological Survey Open-File Report49 p. Comparables *. Palmer is located in the same metallogenic belt as Greens Creek and Windy Craggy VMS deposits - both widely recognized to be world class systems.
Palmer compares, in both grade and size, to the most highly prospective VMS belts currently undergoing significant exploration efforts. Greens Creek is a polymetallic silver-rich volcanogenic massive sulfide deposit (VMS or VHMS for Volcanic Hosted Massive Sulfide deposit) located in they Late Triassic Hyd group.
The Hyd contains sedimentary and volcanic rocks and is interpreted as having been deposited in a back arc basin. Newberry RJ, Brew DA () The Upper Triassic Greens Creek VMS (Volcanogenic Massive Sulfide) deposit and Woewodski Island VMS prospects, southeastern Alaska: chemical and isotopic data for rocks and ores demonstrate similarity of these deposits and their host rocks.
USGS Open-File Reportp 49Cited by: The Metallogeny of Late Triassic Rifting of the Alexander Terrane in Southeastern Alaska and Northwestern British Columbia* Cliff D Deposits within this belt include Greens Creek and Windy Craggy, the economically most significant VMS deposit in Alaska and the largest in North America, respectively.
genesis rare earths Sr/Sr plate Cited by: Upper Hazelton Group volcano-sedimentary strata host the world class, precious metal-enriched, polymetallic Eskay Creek volcanogenic massive sulphide (VMS) deposit in northwest Stikinia, as well as a number of epithermal and porphyry deposits in associated subvolcanic intrusions throughout central and northern by: 1.
The rocks of the Upper Triassic Nicola Group represent the altered broken remnants of a volcanic island archipelago.
Ab feet of Upper Triassic sediments and volcanic rock are present in the thesis area. The group is the product of two cycles of deposition distinguishable on the basis of relative abundance of phenocrysts in the volcanic members. Rocks of the lower cycle (P Cited by: 4.
sequences of the Permian-Triassic sections at Greens Creek (fig. 5) and may represent the shallow ultramafic source of the metabasaltic protoliths or the overlying mafic volcanic flows of the Hyd Group, perhaps highly altered cumulates left after extraction of mafic melts.
The Greens Creek mine is a volcanogenic massive sulphide deposit in the central portion of the Alexander Triassic metallogenic belt (ATMB) and is one of the top global silver producers despite having a dominantly mafic metavolcanic stratigraphic : Patrick J.
Sack, Ron F. Berry, J. Bruce Gemmell, Sebastien Meffre, Andrew West. Generalized map of terranes boundaries (bold lines) and major volcanogenic massive sulfide prospects (numbered circles), southeast Alaska, showing the locations of the Late Triassic age VMS deposits, including Greens Creek (#10), Pyrola (#11), and Gambier Bay (#19) on Admiralty Island (after Newberry and others, ).
6 Technical Sessions Abstract Guide Technical Sessions Abstract Guide 7 Mineral exploration in Yukon remained strong in Exploration expenditures exceeded C$ million and development expenditures were C$8 million. This is a significant increase over levels.
This underground Zn–Ag–Au–Pb mine extracts ore from a volcanogenic massive sulfide-sedimentary exhalative (VMS-SEDEX) hybrid deposit which is hosted in Triassic calcareous argillite and siliceous phyllite (Taylor et al., ).
Development of the Greens Creek mine began in and full-scale production commenced in Cited by:. The Greens Creek mine in the Admiralty mining district is the 5th largest silver producer in the world; gold is a byproduct.
The mine is an underground operation, with surface disposal of tailings onto two acre (, m 2) y: United States.River Runners' Guide to Dinosaur National Monument and Vicinity: With Emphasis on Geologic Features Philip Thayer Hayes, George Clarke Simmons Powell Society, - Dinosaur National Monument - Missing: VMS.Reconstruction of Ceratites spinosus, from Klug et al.
(). The ceratites of the order Ceratitida (or suborder Ceratitina, depending on how you've tuned your rank-o-meter today) were close relatives of the ammonites, each deriving separately from an earlier cephalopod group known as the g: VMS.