Geologic map of the Zarkashan-Anguri copper and gold deposits, Ghazni Province, Afghanistan, modified from the 1968 original map compilation of E.P. Meshcheryakov and V.P. Sayapin

2011 ◽  
Author(s):  
Stephen G. Peters ◽  
Will R. Stettner ◽  
Linda M. Masonic ◽  
Thomas W. Moran
Keyword(s):  
Gold Deposits ◽  
Geologic Map

Pioneering Geologic Studies of the Black Hills, Dakota Territory, USA

2005 ◽  
Vol 24 (2) ◽  
pp. 175-196 ◽  
Author(s):  
K. Aalto
Keyword(s):  
Mineral Resources ◽  
Gold Deposits ◽  
Black Hills ◽  
John Wesley ◽  
Geologic History ◽  
History Of ◽  
Geologic Map ◽  
Field Season ◽  
Thin Section Petrography ◽  
John Wesley Powell

Discovery of significant gold deposits in the Black Hills, Dakota Territory, in the early 1870s led to a Congressional mandate that organized geological exploration of the Hills be undertaken. Ferdinand V. Hayden (1829-1887), who had previously visited the region, principally to collect fossils, was thwarted in his efforts to oversee such exploration by the combined efforts of John Strong Newberry (1822-1892) and John Wesley Powell (1834-1902), who instead promoted Walter P. Jenney (1850-1904?) and Henry Newton (1845-1877), both colleagues of Newberry at the Columbia College School of Mines. In a four-month field season the Jenney/Newton Survey (1875) carefully examined some 6,000 square miles of the Black Hills. Newton then oversaw production of an extensive report on the geology, mineral resources and other aspects of natural history. The report included a detailed geologic map, numerous stratigraphic columns, interpretive figures illustrating the geomorphic evolution of the Hills, thin section petrography of samples collected and a general discussion of the geologic history. Of note are Newton's interpretations of laccolith formation and drainage evolution. Despite Congressional approval funding production, the publication of the report was delayed until 1880, after Newton's untimely death in 1877 during a second visit to the Hills. It appeared under the auspices of John Wesley Powell's Geographical and Geological Survey of the Rocky Mountains Region. G. K. Gilbert (1843-1918) unofficially edited the final version of the report, using Newton's notes, drafts and figures. However, Newton should justly receive credit for its excellence.

Heavy Gold Deposits and a Good them Solution for Producing Them

1908 ◽  
Vol 65 (1678supp) ◽  
pp. 135-137
Keyword(s):  
Gold Deposits

Studi Awal Geologi di Daerah Beruang Kanan Kabupaten Gunung Mas Propinsi Kalimantan Tengah

PROMINE ◽  
2018 ◽  
Vol 6 (1) ◽  
pp. 1-11
Author(s):  
Retno Anjarwati ◽  
Arifudin Idrus ◽  
Lucas Donny Setijadji
Keyword(s):  
Gold Mineralization ◽  
Volcanic Rocks ◽  
Gold Deposits ◽  
Central Kalimantan ◽  
Magmatic Arc ◽  
Tertiary Sediment ◽  
Copper Gold ◽  
Regional Tectonic ◽  
Mineralization Processes ◽  
High Yields

The regional tectonic conditions of the KSK Contract of Work are located in the mid-Tertiary magmatic arc (Carlile and Mitchell, 1994) which host a number of epithermal gold deposits (eg, Kelian, Indon, Muro) and significant prospects such as Muyup, Masupa Ria, Gunung Mas and Mirah. Copper-gold mineralization in the KSK Contract of Work is associated with a number of intrusions that have occupied the shallow-scale crust at the Mesozoic metamorphic intercellular junction to the south and continuously into the Lower Tertiary sediment toward the water. This intrusion is interpreted to be part of the Oligocene arc of Central Kalimantan (in Carlile and Mitchell 1994) Volcanic rocks and associated volcanoes are older than intrusions, possibly aged Cretaceous and exposed together with all three contacts (Carlile and Mitchell, 1994) some researchers contribute details about the geological and mineralogical background, and some papers for that are published for the Beruang Kanan region and beyond but no one can confirm the genesis type of the Beruang Kanan region The mineralization of the Beruang Kanan area is generally composed by high yields of epithermal sulphide mineralization. with Cu-Au mineralization This high epithermal sulphide deposition coats the upper part of the Cu-Au porphyry precipitate associated with mineralization processes that are generally controlled by the structure

Geologic map of Montana

1955 ◽  
Keyword(s):  
Geologic Map

Geologic map of New Mexico

1965 ◽  
Keyword(s):  
New Mexico ◽  
Geologic Map
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