Survival conditions of folding in different depth during orogenesis-deformation in Texas Creek and Chester Dome, USA

Cao, Hui, and Xu, Cuiping (2014) Survival conditions of folding in different depth during orogenesis-deformation in Texas Creek and Chester Dome, USA. Acta Geologica Sinica, 88 (1). pp. 103-112.

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Abstract

A succession of 5 FIA trends (foliation intersection or inflection axes in porphyroblasts) preserved in high temperature-low pressure regime PreCambrian rocks in the Texas Creek, Arkansas River region reflected by the fold axial plane traces and schistosity data in this region. Similar fold axial plane trace data measured in Palaeozoic rocks in Chester Dome, Vermont, which is high temperature to medium pressure regime, only preserve the effects of the youngest FIAs of the all 5 FIA sets that obtained in this region. The other three FIA sets have no equivalent fold axial planes. This difference from shallow to deeper orogenic regimes reflects decreasing competency at greater pressure with collapse and unfolding of earlier formed folds. The greater overlying load of rocks has tended to flatten all but the very largest early-formed structures, preserving only those folds that were more recently developed.

Item ID: 38830
Item Type: Article (Research - C1)
ISSN: 1755-6724
Keywords: orogenesis, fold axial plane, foliation intersection or inflection axes, gravitational collapse, porphyroblast
Funders: National Science Foundation of China (NSFC), China Council Scholarship, MLR, China, Institute of Geology, CAGS
Projects and Grants: NSFC 41202153, China Council Scholarship 2013693, MLR, China 201211093, Institute of Geology, CAGS J1101
Date Deposited: 12 May 2015 00:37
Downloads: Total: 2
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