Interlinking the Hotspot Track in the Arctic and its Implications for Paleo-plate Reconstrution

• Published in: Acta Geologica Sinica - English Edition
• Main Authors: Liu, Zhonglan, Li, Jianghai, Liu, Chiheng, Li, Weibo, Zhang, Hongwei
• Other Authors: Liu, ZL (reprint author), Peking Univ, Sch Earth & Space Sci, Key Lab Orogen Belts & Crustal Evolut, Minist Educ, Beijing 100871, Peoples R China.; Liu, ZL (reprint author), Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA., Peking Univ, Sch Earth & Space Sci, Key Lab Orogen Belts & Crustal Evolut, Minist Educ, Beijing 100871, Peoples R China., Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA., Peking Univ, Inst Oil & Gas, Beijing 100871, Peoples R China., Liu, ZL (reprint author), Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA.
• Format: Journal/Newspaper
• Language: English
• Published: ACTA GEOLOGICA SINICA-ENGLISH EDITION 2017
• Subjects: hotspot track; large igneous province; paleogeography reconstruction; Alpha-Mendeleev ridge; the Arctic; ICELAND; GEOCHRONOLOGY; GRAVITY; HISTORY; ORIGIN; REGION; RIDGE; MA; PALEOMAGNETISM; Arctic; Baffin Bay; Greenland; Pacific; Baffin; Iceland; Alaska
• Online Access: https://hdl.handle.net/20.500.11897/476918; https://doi.org/10.1111/1755-6724.13312

The Siberian-Icelandic hotspot track is the only preserved continental hotspot track. Although the track and its associated age progression between 160 Ma and 60 Ma are not yet well understood, this section of the track is closely linked to the tectonic evolution of Amerasian Basin, the Alpha-Mendeleev Ridge and Baffin Bay. Using paleomagnetic data, volcanic structures and marine geophysical data, the paleogeography of Arctic plates (Eurasian plate, North American Plate, Greenland Plate and Alaska Microplate) was reconstructed and the Siberian-Icelandic hotspot track was interlinked between 160 Ma and 60 Ma. Our results suggested that the Alpha-Mendeleev Ridge could be a part of the hotspot track that formed between 160 Ma and 120 Ma. During this period, the hotspot controlled the tectonic evolution of Baffin Bay and the distribution of mafic rock in Greenland. Throughout the Mesozoic Era, the aforementioned Arctic plates experienced clockwise rotation and migrated northeast towards the North Pacific. The vertical influence from the ancient Icelandic mantle plume broke this balance, slowing down some plates and resulting in the opening of several ocean basins. This process controlled the tectonic evolution of the Arctic. China Ocean Mineral Resources Research and Development Association Project [DY125-12-R-03] SCI(E) 中国科学引文数据库(CSCD) ARTICLE 3 822-831 91