Geological Society of America;Boulder: Geological Society of America (GSA)
摘要:
摘要： Constraining the timing of initial collision is critical for understanding how long-term plate convergence is accommodated at collisional plate boundaries. Reevaluation of the age of collision from orogenic thermal evolution requires distinguishing the onset of submarine continental accretion from earlier oceanic subduction and subsequent subaerial orogenic evolution. We present new thermochronological constraints from the first age-elevation relationship transect in Taiwan and zircon and apatite fission-track ages from sediments in the western foreland. Our data reveal the onset of cooling from at least 7.1 ± 1.3 Ma, at a minimum rate of 21 °C/m.y., in the submarine sedimentary wedge followed by a marked acceleration of subaerial exhumation after ca. 3.2 ± 0.6 Ma at an average rate of 1.7 km/m.y. Our data reflect the effect of margin architecture as Taiwan evolved from submarine accretion of the distal extremely thinned continental margin to crustal thickening of the proximal margin and orogenic development. 出版者： Boulder: Geological Society of America (GSA) 出版日期： 2014-10-01 出處： Geology (Boulder), 2014-10, Vol.42 (10), p.907-910 資源來源： GeoScienceWorld 版權： GeoRef, Copyright 2020, American Geosciences Institute. Reference includes data from GeoScienceWorld Alexandria, VA USA United States. Reference includes data supplied by the Geological Society of America Boulder, CO USA United States 版權： Copyright Geological Society of America Oct 2014 版權： licence_http://creativecommons.org/publicdomain/zero 識別號： ISSN: 0091-7613 識別號： EISSN: 1943-2682 識別號： DOI: 10.1130/G35854.1
