Depositional and tectonic evolution of a supradetachment basin

40Ar/39Ar geochronology of the Nova Formation, Panamint Range, California

Noah P. Snyder, Kip Hodges

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The Nova Basin contains an upper Miocene to Pliocene supradetachment sedimentary succession that records the unroofing of the Panamint metamorphic core complex, west of Death Valley, California. Basin stratigraphy reflects the evolution of sedimentation processes from landslide emplacement during basin initiation to the development of alluvial fans composed of reworked, uplifted sections of the basin fill. 40Ar/39Ar geochronology of volcanic units in middle and lower parts of the sequence provide age control on the tectonic and depositional evolution of the basin and, more generally, insights regarding the rate of change of depositional environments in supradetachment basins. Our work, along with earlier research, indicate basin deposition from 11.38 Ma to 3.35 Ma. The data imply sedimentation rates, uncorrected for compaction, of ~100 m Myr-1 in the lower, high-energy part to ~1000 m Myr-1 in the middle part characterized by debris-flow fan deposition. The observed variation in sediment flux rate during basin evolution suggests that supradetachment basins have complex depositional histories involving rapid transitions in both the style and rate of sedimentation.

Original languageEnglish (US)
Pages (from-to)19-30
Number of pages12
JournalBasin Research
Volume12
Issue number1
DOIs
StatePublished - Mar 2000
Externally publishedYes

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tectonic evolution
geochronology
basin
sedimentation
unroofing
basin fill
alluvial fan
basin evolution
debris flow
sedimentation rate
depositional environment
landslide
compaction
Pliocene
emplacement
stratigraphy
Miocene
valley
tectonics
history

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)

Cite this

Depositional and tectonic evolution of a supradetachment basin : 40Ar/39Ar geochronology of the Nova Formation, Panamint Range, California. / Snyder, Noah P.; Hodges, Kip.

In: Basin Research, Vol. 12, No. 1, 03.2000, p. 19-30.

Research output: Contribution to journalArticle

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