CaltechAUTHORS
  A Caltech Library Service

Slowing of India's convergence with Eurasia since 20 Ma and its implications for Tibetan mantle dynamics

Molnar, Peter and Stock, Joann M. (2009) Slowing of India's convergence with Eurasia since 20 Ma and its implications for Tibetan mantle dynamics. Tectonics, 28 . TC3001. ISSN 0278-7407. https://resolver.caltech.edu/CaltechAUTHORS:20090821-081957305

[img]
Preview
PDF - Published Version
See Usage Policy.

2615Kb

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20090821-081957305

Abstract

Reconstructions of the relative positions of the India and Eurasia plates, using recently revised histories of movement between India and Somalia and between North America and Eurasia and of the opening of the East African Rift, show that India's convergence rate with Eurasia slowed by more than 40% between 20 and 10 Ma. Much evidence suggests that beginning in that interval, the Tibetan Plateau grew outward rapidly and that radially oriented compressive strain in the area surrounding Tibet increased. An abrupt increase in the mean elevation of the plateau provides a simple explanation for all of these changes. Elementary calculations show that removal of mantle lithosphere from beneath Tibet, or from just part of it, would lead to both a modest increase in the mean elevation of the plateau of ~1 km and a substantial change in the balance of forces per unit length applied to the India and Eurasia plates.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1029/2008TC002271DOIUNSPECIFIED
http://www.agu.org/pubs/crossref/2009/2008TC002271.shtmlPublisherUNSPECIFIED
ORCID:
AuthorORCID
Stock, Joann M.0000-0003-4816-7865
Additional Information:© 2009 American Geophysical Union. Received 6 February 2008; accepted 10 March 2009; published 16 May 2009. One of us was justifiably provoked by Marin Clark’s question in 2003, "Wouldn’t you expect a change in plate motions at 8 Ma"? C. DeMets both offered useful suggestions for improving the manuscript and supplied us with preprints in advance of publication. This research was supported in part by the National Science Foundation under grants EAR-0440004, EAR 0507330, EAR 0636092, and OPP-0338317. Figures 2, 4, and 5 were made using Generic Mapping Tools (GMT) software.
Group:Seismological Laboratory
Funders:
Funding AgencyGrant Number
NSFEAR-0440004
NSFEAR 0507330
NSFEAR 0636092
NSFOPP-0338317
Record Number:CaltechAUTHORS:20090821-081957305
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20090821-081957305
Official Citation:Molnar, P., and J. M. Stock (2009), Slowing of India's convergence with Eurasia since 20 Ma and its implications for Tibetan mantle dynamics, Tectonics, 28, TC3001, doi:10.1029/2008TC002271.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:15218
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:21 Aug 2009 20:40
Last Modified:03 Oct 2019 00:56

Repository Staff Only: item control page