Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1130/B31913.1 |
From arc evolution to arc-continent collision: Late Cretaceous-middle Eocene geology of the Eastern Pontides, northeastern Turkey | |
Kandemir, Ozgur1; Akbayram, Kenan2,3; Cobankaya, Mehmet1; Kanar, Fatih1; PehRyan, Sukru1; Tok, Turgut4; Hakyemez, Aynur1; Ekmekci, Erkan1; Danac, Fusun1; Temiz, Ugur5 | |
2019-11-01 | |
发表期刊 | GEOLOGICAL SOCIETY OF AMERICA BULLETIN |
ISSN | 0016-7606 |
EISSN | 1943-2674 |
出版年 | 2019 |
卷号 | 131页码:1889-1906 |
文章类型 | Article |
语种 | 英语 |
国家 | Turkey |
英文摘要 | The Eastern Pontide Arc, a major fossil submarine arc of the world, was formed by northward subduction of the northern Neo-Tethys lithosphere under the Eurasian margin. The arc's volcano-sedimentary sequence and its cover contain abundant fossils. Our new systematical paleontological and structural data suggest the Late Cretaceous arc volcanism was initiated at early-middle Turonian and continued uninterruptedly until the end of the early Maastrichtian, in the northern part of the Eastern Pontides. We measured similar to 5500-m-thick arc deposits, suggesting a deposition rate of similar to 220 m Ma(-1) in similar to 25 m.y. We have also defined four different chemical volcanic episodes: (1) an early-middle Turonian- Santonian mafic-intermediate episode, (2) a Santonian acidic episode; when the main volcanic centers were formed as huge acidic domes-calderas comprising the volcanogenic massive sulfide ores, (3) a late Santonian-late Campanian mafic-intermediate episode, and (4) a late Campanian-early Maastrichtian acidic episode. The volcaniclastic rocks were deposited in a deepwater extensional basin until the late Campanian. Between late Campanian and early Maastrichtian, intra-arc extension resulted in opening of back-arc in the north, while the southern part of the arc remained active and uplifted. The back-arc basin was most probably connected to the Eastern Black Sea Basin. In the back-arc basin, early Maastrichtian volcano-sedimentary arc sequence was transitionally overlain by pelagic sediments until late Danian suggesting continuous deep-marine conditions. However, the subsidence of the uplifted-arc-region did not occur until late Maastrichtian. We have documented a Selandian-early Thanetian (57-60 Ma) regional hiatus defining the closure age of the Izmir-Ankara-Erzincan Ocean along the Eastern Pontides. Between late Thanetian and late Lutetian synorogenic turbidites and postcollisional volcanics were deposited. The Eastern Pontide fold-andthrust belt started to form at early Eocene (ca. 55 Ma) and thrusting continued in the post-Lutetian times. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000493796300008 |
WOS关键词 | BLACK-SEA BASIN ; POSTCOLLISIONAL VOLCANIC-ROCKS ; HELLENIC SUBDUCTION ZONE ; MASSIVE SULFIDE DEPOSITS ; SOUTHERN KERMADEC ARC ; LARGE-SCALE OBDUCTION ; I-TYPE GRANITOIDS ; NE TURKEY ; ISOTOPE GEOCHEMISTRY ; TECTONIC EVOLUTION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/188060 |
专题 | 地球科学 |
作者单位 | 1.Gen Directorate Mineral Res & Explorat MTA, Dept Geol Res, TR-06800 Ankara, Turkey; 2.Bingol Univ, Ctr Energy Environm & Nat Disasters, TR-12000 Bingol, Turkey; 3.Bingol Univ, Fac Engn & Architecture, Dept Civil Engn, TR-12000 Bingol, Turkey; 4.Gen Directorate Mineral Res & Explorat MTA, Reg Directorate Black Sea, TR-61010 Trabzon, Turkey; 5.Bozok Univ, Fac Engn & Architecture, Dept Geol Engn, TR-66100 Yozgat, Turkey |
推荐引用方式 GB/T 7714 | Kandemir, Ozgur,Akbayram, Kenan,Cobankaya, Mehmet,et al. From arc evolution to arc-continent collision: Late Cretaceous-middle Eocene geology of the Eastern Pontides, northeastern Turkey[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2019,131:1889-1906. |
APA | Kandemir, Ozgur.,Akbayram, Kenan.,Cobankaya, Mehmet.,Kanar, Fatih.,PehRyan, Sukru.,...&Temiz, Ugur.(2019).From arc evolution to arc-continent collision: Late Cretaceous-middle Eocene geology of the Eastern Pontides, northeastern Turkey.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,131,1889-1906. |
MLA | Kandemir, Ozgur,et al."From arc evolution to arc-continent collision: Late Cretaceous-middle Eocene geology of the Eastern Pontides, northeastern Turkey".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 131(2019):1889-1906. |
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