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Zircon fission-track ages from the Gasherbrum Diorite, Karakoram Range, northern Pakistan

1989; Geological Society of America; Volume: 17; Issue: 11 Linguagem: Inglês

10.1130/0091-7613(1989)017 2.3.co;2

1943-2682

Philip F. Cerveny, Charles W. Naeser, P. B. Kelemen, Joshua E. Lieberman, Peter K. Zeitler,

High-pressure geophysics and materials

Research Article| November 01, 1989 Zircon fission-track ages from the Gasherbrum Diorite, Karakoram Range, northern Pakistan Philip F. Cerveny; Philip F. Cerveny 1Department of Earth Sciences, Dartmouth College, Hanover, New Hampshire 03755 Search for other works by this author on: GSW Google Scholar Charles W. Naeser; Charles W. Naeser 2U.S. Geological Survey, M.S. 424, Federal Center, Denver, Colorado 80225 Search for other works by this author on: GSW Google Scholar Peter B. Kelemen; Peter B. Kelemen 3Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543 Search for other works by this author on: GSW Google Scholar Joshua E. Lieberman; Joshua E. Lieberman 4Universitat Bern, Mineralogisch-petrographisches Institut, Balizer-Strasse 1, CH-3012 Bern, Switzerland Search for other works by this author on: GSW Google Scholar Peter K. Zeitler Peter K. Zeitler 5Department of Geological Sciences, Lehigh University, Bethlehem, Pennsylvania 18015 Search for other works by this author on: GSW Google Scholar Author and Article Information Philip F. Cerveny 1Department of Earth Sciences, Dartmouth College, Hanover, New Hampshire 03755 Charles W. Naeser 2U.S. Geological Survey, M.S. 424, Federal Center, Denver, Colorado 80225 Peter B. Kelemen 3Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543 Joshua E. Lieberman 4Universitat Bern, Mineralogisch-petrographisches Institut, Balizer-Strasse 1, CH-3012 Bern, Switzerland Peter K. Zeitler 5Department of Geological Sciences, Lehigh University, Bethlehem, Pennsylvania 18015 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1989) 17 (11): 1044–1048. https://doi.org/10.1130/0091-7613(1989)017 2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Philip F. Cerveny, Charles W. Naeser, Peter B. Kelemen, Joshua E. Lieberman, Peter K. Zeitler; Zircon fission-track ages from the Gasherbrum Diorite, Karakoram Range, northern Pakistan. Geology 1989;; 17 (11): 1044–1048. doi: https://doi.org/10.1130/0091-7613(1989)017 2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The Gasherbrum Peaks, in the Himalaya of Pakistan, reach elevations of >8000 m. The relief between the peaks and the adjacent valley (Baltoro Glacier) is in excess of 3000 m. Eight samples of the Early Cretaceous Gasherbrum Diorite at elevations between 4880 and 7165 m on Gasherbrum IV were collected for fission-track dating. Zircon fission-track ages from the Gasherbrum Diorite vary from Early Cretaceous to middle Tertiary in age. There is no consistent pattern between age and elevation. The Cretaceous ages indicate that these rocks were never deeply buried, i.e., heated to temperatures in excess of 175°C, to reset the zircons during Cenozoic time. These results also indicate that the uplift of this part of the Himalaya has been either very rapid and recent, or very slow since Early Cretaceous time. This latter possibility is not consistent with the high relief at Gasherbrum and what is known about regional tectonics. Gasherbrum IV zircons, currently at ∼4880 m, have never been at depths greater than 6 km, and less than 3 km of material has been removed from the top of the range by erosion since the Early Cretaceous. Rapid uplift has occurred very recently, and erosion rates have not been able to keep pace with this uplift. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.