DRAINAGE DEVELOPMENT ON BASALTIC LAVA FLOWS, CIMA VOLCANIC FIELD, SOUTHEAST CALIFORNIA, AND LUNAR CRATER VOLCANIC FIELD, SOUTH-CENTRAL NEVADA.

TY - JOUR

T1 - DRAINAGE DEVELOPMENT ON BASALTIC LAVA FLOWS, CIMA VOLCANIC FIELD, SOUTHEAST CALIFORNIA, AND LUNAR CRATER VOLCANIC FIELD, SOUTH-CENTRAL NEVADA.

AU - Dohrenwend, John C.

AU - Abrahams, Athol D.

AU - Turrin, Brent D.

PY - 1987

Y1 - 1987

N2 - Drainage networks on the accretionary eolian mantles of 11 K-Ar-dated lava flows in Cima volcanic field and 8 K-Ar-dated flows in the Lunar Crater volcanic field show several related and progressive changes with flow age. After accumulation of an eolian mantle (requiring 0. 1 to 0. 2 m. y. ), master drainages extend to all parts of a flow. During this period of elongation, which lasts for minus 0. 2 to 0. 3 m. y. , drainage density (D) and link, frequency (F) increase rapidly whereas the value of Shreve's kappa ( kappa ) declines. After minus 0. 4 m. y. , elaboration replaces elongation as the principal mode of network extension and remains predominant throughout the remainder of the 1. 1-m. y. period of record. Elaboration proceeds mainly by the formation of short tributaries along existing streams and by the creation of short streams along flow margins.

AB - Drainage networks on the accretionary eolian mantles of 11 K-Ar-dated lava flows in Cima volcanic field and 8 K-Ar-dated flows in the Lunar Crater volcanic field show several related and progressive changes with flow age. After accumulation of an eolian mantle (requiring 0. 1 to 0. 2 m. y. ), master drainages extend to all parts of a flow. During this period of elongation, which lasts for minus 0. 2 to 0. 3 m. y. , drainage density (D) and link, frequency (F) increase rapidly whereas the value of Shreve's kappa ( kappa ) declines. After minus 0. 4 m. y. , elaboration replaces elongation as the principal mode of network extension and remains predominant throughout the remainder of the 1. 1-m. y. period of record. Elaboration proceeds mainly by the formation of short tributaries along existing streams and by the creation of short streams along flow margins.

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U2 - https://doi.org/10.1130/0016-7606(1987)99<405:DDOBLF>2.0.CO;2

DO - https://doi.org/10.1130/0016-7606(1987)99<405:DDOBLF>2.0.CO;2

M3 - Article

SN - 0016-7606

VL - 99

SP - 405

EP - 413

JO - Geological Society of America Bulletin

JF - Geological Society of America Bulletin

IS - 3

ER -