A Late Cretaceous tin metallogenic event in Nanling W–Sn metallogenic province: Constraints from U–Pb, Ar–Ar geochronology at the Jiepailing Sn–Be–F deposit, Hunan, China

<div> <p>The Cretaceous arc system formed during closure of West Tethys closure has long been a research focus for crustal geometry and associated ore deposits. Understanding the Africa-Europe motion across time is the key to its resolution. Evidence as to the time that Tethys subduction initiated is preserved in subduction accreted tectonic slices such as in the Gondwanan basement terranes&#160;on&#160;Ios, Cyclades, Greece.&#160;<sup>40</sup>Ar/<sup>39</sup>Ar geochronology in its granitoid basement and the structurally overlying garnet-mica schist&#160;tectonic slice identified a Late Cretaceous&#160;high pressure, medium&#160;temperature (HP&#8211;MP) metamorphic event. The timing and metamorphic conditions are comparable with geochronology and metamorphic conditions reported from other Cycladic islands. We suggest the northward extension of the Asteroussia crystalline terrane on Crete should therefore include the Ios basement tectonic slices, thus revising the regional geometry of the terrane stack. The northern part of the Hellenic terrane stack is overlain by individual Cycladic Eclogite-Blueschist terrane slices (e.g., on Ios) and the southern part is underplated by the tectonic units of the external&#160;Hellenides (Crete). To make such an architecture possible, we propose a 250-300 km southward jump of the subduction megathrust when the Ios basement terranes were accreted to the European terrane stack. Such a significant leap of the subduction megathrust supports a tectonic mode switch in which crust above the subduction zone was first subjected to shortening followed by a stretching event.&#160; Accretion of the Asteroussia slices to the terrane stack likely commenced at or about ~38 Ma. During accretion, the already stretched and exhumed terranes&#160;of the Cycladic Eclogite-Blueschist&#160;Unit&#160;begun&#160;to thrust over the newly accreted Ios basement. The subduction jump had likely been accomplished by ~35&#160;Ma, with rollback recommencing after a period of flat slab subduction followed by slab break off in the new subduction zone. This would allow explanation of the extreme extension that exhumed the&#160;Ios basement terrane, with the Asteroussia slices defining the core of the Ios metamorphic core complex, followed by the onset of&#160;Oligo-Miocene&#160;extension and accompanying magmatism in the Cyclades.</p> </div>

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Supplemental Material: Evolution of the Late Cretaceous Nanaimo Basin, British Columbia, Canada: Definitive provenance links to northern latitudes

10.1130/geos.s.16455609.v1 ◽

2021 ◽

Author(s):

J.B. Mahoney ◽

et al.

Keyword(s):

British Columbia ◽

Late Cretaceous ◽

Detrital Zircon ◽

Isotopic Data ◽

Salmon River ◽

Northern Latitudes ◽

Ar Geochronology

<div>Item A: Summary of Nanaimo Group Detrital Zircon Samples (A1-A2). Item B: Biostratigraphic Age Control on Samples (B1-B10). Item C: Nanaimo Group Detrital Zircon Data (C1-C77). Item D: Nanaimo Group Conglomerate Clast Detrital Zircon Data (D1-D7). Item E: Nanaimo Group Muscovite Ar-Ar Geochronology (E1-E7). Item F: Nanaimo Group Lu-Hf Isotopic Data (F1-F7). Item G: Modern Salmon River Detrital Zircon Data (G1-G3).<br></div>

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New precise zircon U-Pb and muscovite 40 Ar- 39 Ar geochronology of the Late Cretaceous W-Sn mineralization in the Shanhu orefield, South China

Ore Geology Reviews ◽

10.1016/j.oregeorev.2017.01.022 ◽

2017 ◽

Vol 84 ◽

pp. 338-346 ◽

Cited By ~ 9

Author(s):

Yongfeng Cai ◽

Zuohai Feng ◽

Tongbin Shao ◽

Rongguo Hu ◽

Yun Zhou ◽

...

Keyword(s):

Late Cretaceous ◽

South China ◽

Ar Geochronology

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Supplemental Material: Evolution of the Late Cretaceous Nanaimo Basin, British Columbia, Canada: Definitive provenance links to northern latitudes

10.1130/geos.s.16455609 ◽

2021 ◽

Author(s):

J.B. Mahoney ◽

et al.

Keyword(s):

British Columbia ◽

Late Cretaceous ◽

Detrital Zircon ◽

Isotopic Data ◽

Salmon River ◽

Northern Latitudes ◽

Ar Geochronology

<div>Item A: Summary of Nanaimo Group Detrital Zircon Samples (A1-A2). Item B: Biostratigraphic Age Control on Samples (B1-B10). Item C: Nanaimo Group Detrital Zircon Data (C1-C77). Item D: Nanaimo Group Conglomerate Clast Detrital Zircon Data (D1-D7). Item E: Nanaimo Group Muscovite Ar-Ar Geochronology (E1-E7). Item F: Nanaimo Group Lu-Hf Isotopic Data (F1-F7). Item G: Modern Salmon River Detrital Zircon Data (G1-G3).<br></div>

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GOLD METALLOGENY OF THE SERBOMACEDONIANRHODOPE METALLOGENIC BELT (SRMB)

Bulletin of the Geological Society of Greece ◽

10.12681/bgsg.11950 ◽

2017 ◽

Vol 50 (4) ◽

pp. 2037 ◽

Cited By ~ 4

Author(s):

A. Tsirambides ◽

A. Filippidis

Keyword(s):

Late Cretaceous ◽

Precious Metals ◽

The South ◽

Metallogenic Province ◽

South Eastern ◽

Hydrothermal Deposits ◽

Metallogenic Belt ◽

Balkan Countries

The Alpine-Balkan-Carpathian-Dinaride (ABCD) metallogenic belt, which tectonically evolved during Late Cretaceous to the present, is Europe’s premier metallogenic province, especially for gold. Three spatially distinct tectonic and metallogenic belts are associated with this belt. One of them is the SerbomacedonianRhodope Metallogenic Belt (SRMB) which intersects with a NNW-SSE trend the south eastern Balkan countries. This belt includes the geotectonic zones of Vardar (Axios), Circum-Rhodope, and the Serbomacedonian and Rhodope Massives. It comprises dominantly carbonate replacement or porphyry metal deposits, stratiform volcanosedimentary deposits, skarns and various isolated magmatic-hydrothermal deposits. The most significant Au metallogeny centers of this belt are found in Bulgaria (i.e., Madjarovo, Ada Tepe, Madan, Lozen), Greece (i.e., Perama Hill, Sapes, Maronia, Olympias-Stratoni-Skouries, Gerakario-Vathi-Pontokerasia), F.Y.R.O.M. (i.e., Buchim, Ilovitza, Alshar), Kosovo (i.e., Trepca), and Serbia (i.e., Lece District: Kiseljak, Bakrenjaca). The metal reserves of all categories in the SRMB are 24 t Au, 14 t Ag and >100 Mt (Pb+Zn) ore in Bulgaria, 743 t Au, 4100 t Ag, 5345 th.t Cu and 3125 th.t (Pb+Zn) in Greece, 106 t Au, 96 t Ag and 834 th.t Cu in F.Y.R.O.M., >150 Mt (Pb+Zn) ore in Kosovo, 118 t Au and 1270 th.t Cu in Serbia. In addition many other sites inside this belt exist which are very promising for precious metals.

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Chapter 9 Mineral resources and prospectivity of non-ultramafic rocks of New Caledonia

Geological Society London Memoirs ◽

10.1144/m51-2016-9 ◽

2020 ◽

Vol 51 (1) ◽

pp. 215-245 ◽

Cited By ~ 7

Author(s):

P. Maurizot ◽

B. Sevin ◽

S. Lesimple ◽

J. Collot ◽

J. Jeanpert ◽

...

Keyword(s):

Late Cretaceous ◽

Oil And Gas ◽

New Caledonia ◽

Mineral Resources ◽

Massive Sulfide ◽

Ultramafic Rocks ◽

Energy Potential ◽

Metallogenic Province ◽

Metallic Mineral ◽

Host Rocks

AbstractThe mineral resources of the non-ultramafic rocks of New Caledonia and its Exclusive Economic Zone can be classified according to their host rocks. The metallic mineral resources are essentially associated with volcanic and magmatic activity. Non-economic volcanogenic massive sulfide deposits with Cu and Au are located in the Late Carboniferous Koh Ophiolite and in the Late Cretaceous Poya Terrane. Base metals, Au and Ag of the sedimentary–exhalative type are present in the metamorphic Diahot-Panié Metamorphic Complex, associated with syn-rift volcanism. An Au–Sb metallogenic province is associated with the post-obduction Late Oligocene granitoids and co-genetic hydrothermal silica–carbonate (listwanite) zones in the Peridotite Nappe; Au is disseminated in the granites and Sb occurs as lodes in the silica–carbonate. Among the non-metallic mineral resources, barite, gypsum, magnesite, phosphate, clays, dimension stones, limestone for use as cement and as a neutralizer, and aggregates are all present. Gemstones such as jade and chrysoprase are only used locally. Late Cretaceous coal, which was briefly exploited in the past, is now considered to be a source rock for an offshore potential oil and gas system. Petroleum prospectivity is currently focused on the Fairway Basin. Several low-enthalpy thermo-mineral springs with a weak geothermal energy potential are known on Grande Terre.

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