 | | Journal (article/letter/editorial) | | Epithermal Au-Ag Deposit, Gosowong Goldfield, Halmahera Island, Indonesia Lindsey V. Clark* and J. Bruce Gemmell†...situated in the Neogene magmatic arc of Halmahera, eastern Indonesia, has an estimated resource of 4.4 million...is on the eastern side of the northwest arm of Halmahera, which is composed of four superimposed volcanic...section of the vein. Type 11 is most prevalent to the north. Types 4, 5, 6, and 10 infill are variably distributed...Lateral zonation implies a fluid source from the north. Ore deposition is interpreted to be the result |  | | Journal (article/letter/editorial) | | with the Gosowong Epithermal Au-Ag Deposit, Halmahera, Indonesia: Mineralogy, Geochemistry, and Exploration...epithermal Au-Ag deposit, located on Halmahera Island, eastern Indonesia, has a resource of 0.99 million metric...plunging ore shoots along a 400-m section of the north-striking, east-dipping Gosowong fault. Alteration...on the north arm of the island of Halmahera (Fig. 1) in the Maluku province of eastern Indonesia (Olberg...rigorous ground reconnaissance program in northern Halmahera, targeting epithermal and gold-copper porphyry |  | | Journal (issue) | | Chairmen: Midlands – P Phillips, North East – M Houghton and S North, North West – D M Brady, Scottish –... Email: info@gemcertificate.com Abstract: The north of Madagascar is rich in corundum occurrences. Late...showing the sample localities at Befotaka on Nosy-Bé island and Andovokonko on Ambato peninsula. The inset...shows the wellknown sapphire occurrences in the North between Ambilobe and Antsiranana (Ambondromifehy)...metamorphic-type sapphires from the southern part of the island (cf. Milisenda et al., 2001). Genesis of the placer |  | | Journal (issue) | | State, USA Copper Minerals in Chalcedony from Indonesia b THE JOURNAL OF GEMMOLOGY, 38(5), 202 3 Volume...Rossman Copper Minerals in Chalcedony from Obi Island, Indonesia 512 By Joel Ivey and Brendan M. Laurs 477...CHAIRMEN Midlands – Craig O’Donnell North East – Mark W. Houghton North West – Liz Bailey South West – Rachael...lower Rhine area, the Benedictine Abbey on the island of Reichenau in Lake Constance, and even goldsmiths’...German Archaeological Project in the Southern Province, Vol. 1. Verlag Philipp von Zabern, Mainz am Rhein |  | | Book (edition) | | BIBLIOGRAPHY OF THE GEOLOGY OF INDONESIA AND SURROUNDING ARE AS Edition 7.1 – 8 June 2020 J.T. VAN GORSEL...GORSEL Bibliography of Indonesia Geology, Ed. 7.1 1 www.vangorselslist.com 6/8/20 LIST OF CONTENTS........................................ 9 I.1. Indonesia Regional Geology................................................. 862 IV. BORNEO (KALIMANTAN & NORTH BORNEO) .............................................................................. 946 IV.3. North Borneo (Sarawak, Sabah, Brunei) ............... |  | | Book | | Macroseismic observations of the 1988 earthquakes in north-west Elis, Peloponnese, western Greece and their...extensional province and compares these with the Range front fault scarps of the Basin and Range province in the...generalization. It is a remarkable feature of the North American continent that there are folds and faults...Rocky Mountains, there is a large Devonian reef province with regional dips of 5° or less. The former is...Gulf Coast and include the western Canada basin. North America is not unique in this regard. Confining |  | Mugas Lobos, Ana Cecilia, Márquez-Zavalía, María Florencia, Lira, Raúl, Hernández, Laura Beatriz (2021) Mineralogy and microthermometry of the Escondida, Gabriela and Margarita mineralized structures from the Cerro Moro epithermal deposit, Deseado Massif, Argentina. Journal of South American Earth Sciences, 105. 103077pp. doi:10.1016/j.jsames.2020.103077 | Journal (article/letter/editorial) | | Au-Ag epithermal deposit located in Santa Cruz province, southern Patagonia Argentina. It is hosted by...Au-Ag epithermal deposit located in Santa Cruz province, in the Patagonia region of southern Argentina...Deseado auriferous province by Zappettini (1999) and as the Au–Ag metallogenic province by Schalamuk et...rhyolitic province (Kay et al., 1989; Pankhurst et al., 1998), a silicic large igneous province (LIP) mainly...and intercalated lavas. This voluminous silicic province, where the Chon Aike Formation is dominant (Pankhurst |  | | Report (issue) | | Jntei^fatw^d ^ifl^p of $iate> in; ^(mpfmn wth the D of Indonesia, the Australia qgy- and (Geophysicst and the ...behalf of the Ministry of Mines, Government of Indonesia, and the Agency for International Development...in cooperation with the Geological Survey of Indonesia, the Australia Bureau of Mineral Resources, Geology....................................... Christmas Island .................................................sedimentary rocks ........................... Inactive island arc between the South Arm and Flores .... Subduction |  | | Book | | occurrences/deposits/mines of six continents: Africa, North America, South America, Asia, Oceania (including... Africa, Brazil, New Caledonia, Philippines, Indonesia, and the Caribbean. The largest chromite deposits...nickel–copper deposits of South Africa and the Province of Ontario, Canada. The processing of large volumes...Willamette meteorite in Oregon State is the largest in North America and 6th largest iron–nickel meteorite in...Wallbridge Mining Company Limited, Sudbury Camp, North Range, Ontario, Canada. The crystal is approximately |  | Sykora, Stephanie, Selley, David, Cooke, David R., Harris, Anthony C. (2018) The Structure and Significance of Anhydrite-Bearing Vein Arrays, Lienetz Orebody, Lihir Gold Deposit, Papua New Guinea. Economic Geology, 113 (1) 237-270 doi:10.5382/econgeo.2018.4550 | Journal (article/letter/editorial) | | Lienetz orebody resulted in a magmatic-hydrothermal breccia complex and associated hydrothermal veins, most...the north. Linking these large, low-angle veins are sets of tensile to hybrid veins and breccia veins...principal vein array with low-angle dips to the north. Porphyry-stage veins were modified during epithermal...produced NE-striking tensile to hybrid veins and breccia veins with high-angle dips and rhombic dilational...ENE-striking structural grain, evident at both the island scale and the deposit scale, was inherited from |  | | Report (issue) | | references and index. ISBN 978-0-8137-2436-2 (pbk.) 1. Island arcs. 2. Rocks, Carbonate—Analysis. 3. Convergent...the passive margin of southern China. Towards the north of Taiwan the mountains experience gravitational.... . v 1. Preservation of forearc basins during island arc–continent collision: Some insights from the...Cynthia J. Ebinger 3. Cenozoic arc processes in Indonesia: Identification of the key influences on the stratigraphic...and Chung-Pai Chang 7. Oblique subduction in an island arc collision setting: Unique sedimentation, accretion |  | | Report (volume) | | geochemistry of the plutonic rocks of the Halmahera ophiolite, Eastern Indonesia, an analogue of modern oceanic...geochemistry of the plutonic rocks of the Halmahera ophiolite, Eastern Indonesia, an analogue of modern oceanic...describes the dismembered ophiolitic rocks of eastern Indonesia, notes the relatively limited MORBlike component...rocks of the Papuan and Marum ophiolites of the island of New Guinea, these rocks appear to have strong...were thrust >100 km southeastward beneath western North America, and a coeval magmatic arc (Chetco River |  | Liu, Yang, Sun, Jinggui, Han, Jilong, Ren, Liang, Gu, Alei, Zhao, Keqiang, Wang, Changshen (2019) Origin and evolution of ore-forming fluid for the Gaosongshan gold deposit, Lesser Xing'an Range: Evidence from fluid inclusions, H-O-S-Pb isotopes. Geoscience Frontiers, 10 (5) 1961-1980 doi:10.1016/j.gsf.2019.01.006 | Journal (article/letter/editorial) | | are mainly hematite-crusted quartz, hydrothermal breccia, massive pyrite-quartz, etc.; (3) the alteration...Central Asian Orogenic Belt (Fig. 1A) and lies north of the YichunYanshou fold belt within the Lesser...textures have been identified, including hydrothermal breccia (Fig. 3E, G, H and K), veins (Fig. 3J), and cataclastic...hand specimen of the cataclastic hydrothermal breccia, showing the hydrothermal material cementing rhyolite...hydrothermal breccia (Q2) and trachyandesite; (F) primary hematite-crusted ore; (G) hydrothermal breccia ore; |  | Leary, Stephen, Sillitoe, Richard H., Stewart, Peter W., Roa, Karl J., Nicolson, Benjamin E. (2016) Discovery, Geology, and Origin of the Fruta del Norte Epithermal Gold-Silver Deposit, Southeastern Ecuador. Economic Geology, 111 (5) 1043-1072 doi:10.2113/econgeo.111.5.1043 | Journal (article/letter/editorial) | | abundant base metal sulfides and the other in the north dominated by manganese- and base metal-poor quartz...progressed, Fruta del Norte and environs farther north were covered by an even wider (400 m) spaced, induced...resistivity-high chargeability anomaly about 2 km north of Bonza-Las Peñas along the projection of the Las...chalcedony veinlets and pyritic and siliceous breccia over the final 70 m and readily explained the geophysical...continuity of the mineralization along strike to the north and south of hole 51 on section line 3300mN. After |  | | Journal (article/letter/editorial) | | belt in western Asia. Alborz is restricted to the north by the Caspian depression block which is a post-arc...intercontinental volcanic arc connected to subduction to the north along the Zagros suture zone (Zanchi et al., 2006)...member units (tuff, lithic tuff, sandy tuff, tuff breccia, trachy-andesite) (Appendix 1, Fig. 1). Volcanic...and hydrothermal breccia. The main gold minerali zation occurred in the tuff-breccia (rhyodacite) and...directions. Faults with NE–SW trending have controlled breccia zones and miner alized veins (Zamanian et al. |  | | Journal (article/letter/editorial) | | was indicated for the Kencana Au–Ag deposit, Indonesia, in which mixing was inferred to be particularly...over 2200 m, oriented in a NE–SW direction in the north and N–S direction in the south (Fig. 3). Outcrop...zones with different fracture densities. A fault-breccia zone 8– 15-m wide is located adjacent to the vein...zone 7–18-m wide is located outside the fault-breccia zone and includes many veinlets with quartz, calcite...altered when in contact with the vein in the fault-breccia zone on the −10L level. The AI zone is strongly |  | | Book | | . 2.5.19 Arakan–Sunda Cenozoic Subduction and Island Arc Zone [50] . 2.5.20 Sunda Plate ( 500 Ma).... . . . . . . . . . 2.5.24 Northern New Guinea Island Arc Zone (Since Neogene) [55] . . .. .. 41 43...khalin–Northeast Japan Cenozoic Subduction and Island Arc Zone ( 40 Ma) [59] . . . . 2.6.5 Japan Sea...Honshu–South Shikoku–Ryukyu Neogene Subduction and Island Arc Zone [62] . . . . . . . . . . . . . . . . ...9 Philippines–Moluccas Cenozoic Subduction and Island Arc Zone [64] . . . . . . . . . . . . . . . . |  | | Journal (article/letter/editorial) | | temporal characteristic of igneous activity on Akutan Island Jay D. Romick t, Michael R. Perfit 2, Samuel E...AcceptedJanuary 2, 1990 Abstract. Lavas from Akutan Island, located in the eastern Aleutian arc at the transition...million years. The oldest lavas exposed on the island, the Hot Springs Bay Volcanics (HSBV), range from...geochemical studies of volcanic rocks from the Aleutian Island arc have focused on the central and western Aleutians...and geochemical data for lavas from Akutan Island, an island in the eastern Aleutian arc, located near |  | Mao, Xiancheng, Zhang, Wei, Liu, Zhankun, Ren, Jia, Bayless, Richard C., Deng, Hao (2020) 3D Mineral Prospectivity Modeling for the Low-Sulfidation Epithermal Gold Deposit: A Case Study of the Axi Gold Deposit, Western Tianshan, NW China. Minerals, 10 (3) 233 doi:10.3390/min10030233 | Journal (article/letter/editorial) | | deposits, is sandwiched between the NWW-striking North Yili Basin Fault and South Keguqinshan Mountain...continental arc setting related to the subduction of the North Tianshan Ocean [33,38,39], consists of tuff, basaltic...dacite, and rhyolite, with minor volcanoclastic breccia. The aqialehe formation is mainly comprised of...hosted in andesitic and dacitic volcanic rocks and breccia of the uppermost member of the Dahalajunshan formation...fault F2 displays variable strikes from south to north due to multiple phases of deformation associated |  | | Book | | Hypotheses and Mineralization A Geosynclinal Concepts in North America, Europe and the USSR BMetallogenesis and...Zone 2 Preservation potential III Oceanic Linear Island and Seamount Chains A Tectonic Setting B Mineral...Tectonic Setting 1 Continental margin arcs 2 Oceanic island arcs 3 Ancient arcs 4 Volcanic arcs, subduction...and Range Province, western USA 2 Porphyry molybdenum deposits of the western cordillera, North America...Subduction-related Transforms in Continental Margins and Island Arcs A Tectonic Setting BMineral Deposits II Ridge-Ridge |  | | Report (issue) | | structure and tectonic evolution of the region north and east of Australia ............. R. Hall and...and a deeper layer to 200-250 km with dominantly north—-south-oriented anisotropy. Anisotropy in the deep...above 2 mm/y). All intraplate stations are moving north-northwest at around 5 cm/y. In contrast, the northern...orientations. Most stable continental areas such as North and South America and Western Europe are characterised...and in Tasmania and the thickest in Proterozoic north and central Australia and Phanerozoic southeastern |  | Meyerhoff, Arthur A., Taner, Irfan, Morris, A. E. L., Agocs, W. B., Kamen-Kaye, M., Bhat, M. I., Smoot, N. C., Choi, Dong R. (1996) Surge Tectonics: A New Hypothesis of Global Geodynamics. Springer Netherlands. doi:10.1007/978-94-009-1738-5 | Book | | ............ 2.3.25 Mid-Atlantic Ridge Geology North of 37" N Latitude ....... 2.3.26 Mid-Atlantic Ridge.... . . . . . . .. 4.2.3 Active Margin Channels: North American Western Cordillera ......................Fault ................................... 4.4.2 North Anatolia Fault ...................................Framework .............................. 5.1.1 The North-South Zone . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . .. 5.1.2 Neocathaysian (North-Northeast) Strikes ................. 5.1.3 Role |  | | Book | | Island Arcs Deep Sea Trenches and Back-Arc Basins Maurice Ewing Series 1 Manik Talwani and Walter C...Winslow J. L. Worzel Maurice Ewing Series 1 Island Ares Deep Sea Trenches and Back-Are Basins Edited...American Geophysical Union Washington, D. C. Island Arcs Deep Sea Trenches and Back-Arc Basins Standard...participants were researchers active in the study of Island Arcs, Deep Sea Trenches and Back-Arc Basins. We...Records from the Northern Venezuela Basin and the North Slope of the Muertos Trench, John W Ladd, J. Lamar |  | | Book (edition) | | deltaic sandstones (Pennsylvanian and Permian), North-Central Texas; Gulf Coast Assoc. Geol. Soc. Trans...L., 1963: Sequences in the cratonic interior of North America; Geol. Soc. Am. Bull., v. 74, p. 93113....little useful information on what lies below. The North Sea Basin is an excellent example. This example...in defining broad structural features (B), Banks Island, Arctic Canada. In this case exploratory drilling...interpreted seismic line, continental margin of North Africa (Mitchum et al., 1977). scuring effects |  | | Journal (issue) | | Christopher J. Stefano The Mineralogical Record 6354 North Camino Los Mochis Tucson, Arizona 85718 cjstefanoxls@gmail...Dablon: Four men who had camped on Michipicoten Island in Lake Superior used heated pieces of copper to...to boil water. As they were leaving the island, they heard an incorporeal voice call “who are these robbers...War Department opened a leasing office at Porters Island in Copper Harbor in June of 1843. What followed...others—several occurrences along the east coast of North America for example—but these are all very small) |
|
