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Cosmogenic exposure ages of basalt flows: Lunar crater volcanic field, Nevada

Journal Article · · Geology; (United States)
;  [1]; ; ;  [2]
  1. Washington Univ., St. Louis, MO (United States)
  2. Lawrence Livermore National Lab., CA (United States)
[sup 36]Cl and [sup 10]Be cosmogenic exposure age data for the Black Rock basaltic lava flow, Lunar Crater volcanic field, Nevada, imply an emplacement age of [approximately] 38 [+-] 10 ka. [sup 36]Cl data for the 600 ka flow north of the Lunar Crater maar are consistent with (1) an apparent erosion rate of [approximately] 3 m/m.y., (2) a model of desert pavement formation in which basalt clasts eroded from the flow remain on the surface of the eolian-derived sediments that mantle the flow, and (3) the early formation of the eolian-derived sediment mantle. 20 refs., 3 figs., 2 tabs.
OSTI ID:
6579353
Journal Information:
Geology; (United States), Journal Name: Geology; (United States) Vol. 23:1; ISSN 0091-7613; ISSN GLGYBA
Country of Publication:
United States
Language:
English