Watershed-averaged denudation rates from cosmogenic 36 Cl in detrital magnetite
作者: Angus K. MooreDarryl E. Granger
作者单位: 1Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, 550 Stadium Mall Drive, West Lafayette, IN 47907, United States of America
刊名: Earth and Planetary Science Letters, 2019, Vol.527
来源数据库: Elsevier Journal
DOI: 10.1016/j.epsl.2019.115761
关键词: Watershed denudation ratesCl-36MagnetiteCosmogenic nuclide inter-comparisonDetrital mineralsChemical weathering
原始语种摘要: Abstract(#br)Quartz is widely used as a target mineral for determining watershed-averaged denudation rates because it is resistant to chemical weathering, geologically widespread, and has a well-constrained 10 Be production rate. However, quartz is not available in many landscapes developed on mafic to intermediate igneous rocks. This creates a need to develop new target minerals that are applicable in these environments. Magnetite is a common accessory mineral in many rock types without quartz and, like quartz, is resistant to chemical weathering. Here we evaluate magnetite's suitability as a target mineral by comparing denudation rates inferred from 36 Cl in magnetite to 10 Be in quartz at 12 watersheds in the Sierra Nevada region of California. We find that magnetite and quartz produce...
全文获取路径: Elsevier  (合作)
影响因子:4.349 (2012)

  • detrital 碎屑的
  • denudation 剥蚀
  • magnetite 磁铁矿
  • minerals 矿物
  • quartz 石英
  • weathering 风化酌
  • rates 地方税
  • cosmogenic 宇宙成因的
  • mafic 镁铁质的
  • igneous 火成的