Matches in SemOpenAlex for { <https://semopenalex.org/work/W2351820106> ?p ?o ?g. }
- W2351820106 endingPage "34" @default.
- W2351820106 startingPage "19" @default.
- W2351820106 abstract "Concentrations of cosmogenic 10Be, measured in quartz from chert and river sediment around the Cradle of Humankind (CoH), are used to determine basin-averaged erosion rates and estimate incision rates for local river valleys. This study focusses on the catchment area that hosts Malapa cave with Australopithecus sediba, in order to compare regional versus localized erosion rates, and better constrain the timing of cave formation and fossil entrapment. Basin-averaged erosion rates for six sub-catchments draining the CoH show a narrow range (3.00 ± 0.28 to 4.15 ± 0.37 m/Mega-annum [Ma]; ±1σ) regardless of catchment size or underlying geology; e.g. the sub-catchment with Malapa Cave (3 km2) underlain by dolomite erodes at the same rate (3.30 ± 0.30 m/Ma) as the upper Skeerpoort River catchment (87 km2) underlain by shale, chert and conglomerate (3.23 ± 0.30 m/Ma). Likewise, the Skeerpoort River catchment (147 km2) draining the northern CoH erodes at a rate (3.00 ± 0.28 m/Ma) similar to the Bloubank-Crocodile River catchment (627 km2) that drains the southern CoH (at 3.62 ± 0.33 to 4.15 ± 0.37 m/Ma). Dolomite- and siliciclastic-dominated catchments erode at similar rates, consistent with physical weathering as the rate controlling process, and a relatively dry climate in more recent times. Erosion resistant chert dykes along the Grootvleispruit River below Malapa yield an incision rate of ∼8 m/Ma at steady-state erosion rates for chert of 0.86 ± 0.54 m/Ma. Results provide better palaeo-depth estimates for Malapa Cave of 7–16 m at the time of deposition of A. sediba. Low basin-averaged erosion rates and concave river profiles indicate that the landscape across the CoH is old, and eroding slowly; i.e. the physical character of the landscape changed little in the last 3–4 Ma, and dolomite was exposed on surface probably well into the Miocene. The apparent absence of early Pliocene- or Miocene-aged cave deposits and fossils in the CoH suggests that caves only started forming from 4 Ma onwards. Therefore, whilst the landscape in the CoH is old, cavities are a relatively young phenomenon, thus controlling the maximum age of fossils that can potentially be preserved in caves in the CoH." @default.
- W2351820106 created "2016-06-24" @default.
- W2351820106 creator A5014110342 @default.
- W2351820106 creator A5023142778 @default.
- W2351820106 creator A5034145661 @default.
- W2351820106 creator A5042585545 @default.
- W2351820106 creator A5063283027 @default.
- W2351820106 date "2016-07-01" @default.
- W2351820106 modified "2023-10-06" @default.
- W2351820106 title "Using 10Be cosmogenic isotopes to estimate erosion rates and landscape changes during the Plio-Pleistocene in the Cradle of Humankind, South Africa" @default.
- W2351820106 cites W1580751720 @default.
- W2351820106 cites W1646940530 @default.
- W2351820106 cites W1956933539 @default.
- W2351820106 cites W1969951655 @default.
- W2351820106 cites W1970870226 @default.
- W2351820106 cites W1972964388 @default.
- W2351820106 cites W1974778563 @default.
- W2351820106 cites W1975350041 @default.
- W2351820106 cites W1978754453 @default.
- W2351820106 cites W1987272000 @default.
- W2351820106 cites W1987657517 @default.
- W2351820106 cites W1987857371 @default.
- W2351820106 cites W1989229702 @default.
- W2351820106 cites W1993728319 @default.
- W2351820106 cites W1996989815 @default.
- W2351820106 cites W2000043936 @default.
- W2351820106 cites W2002473398 @default.
- W2351820106 cites W2003921325 @default.
- W2351820106 cites W2004317224 @default.
- W2351820106 cites W2005035365 @default.
- W2351820106 cites W2007407995 @default.
- W2351820106 cites W2008862486 @default.
- W2351820106 cites W2009425598 @default.
- W2351820106 cites W2017266997 @default.
- W2351820106 cites W2024548894 @default.
- W2351820106 cites W2025802385 @default.
- W2351820106 cites W2025924576 @default.
- W2351820106 cites W2026179781 @default.
- W2351820106 cites W2026309649 @default.
- W2351820106 cites W2033340089 @default.
- W2351820106 cites W2038265449 @default.
- W2351820106 cites W2039317729 @default.
- W2351820106 cites W2039977514 @default.
- W2351820106 cites W2043810485 @default.
- W2351820106 cites W2044746378 @default.
- W2351820106 cites W2050693654 @default.
- W2351820106 cites W2052388398 @default.
- W2351820106 cites W2053190053 @default.
- W2351820106 cites W2055406492 @default.
- W2351820106 cites W2057579886 @default.
- W2351820106 cites W2060152348 @default.
- W2351820106 cites W2063155650 @default.
- W2351820106 cites W2063333127 @default.
- W2351820106 cites W2069908908 @default.
- W2351820106 cites W2071614585 @default.
- W2351820106 cites W2077520016 @default.
- W2351820106 cites W2078402605 @default.
- W2351820106 cites W2085636637 @default.
- W2351820106 cites W2087683608 @default.
- W2351820106 cites W2094584790 @default.
- W2351820106 cites W2103928805 @default.
- W2351820106 cites W2105844813 @default.
- W2351820106 cites W2107953759 @default.
- W2351820106 cites W2108129853 @default.
- W2351820106 cites W2113643008 @default.
- W2351820106 cites W2122391108 @default.
- W2351820106 cites W2123594378 @default.
- W2351820106 cites W2124155263 @default.
- W2351820106 cites W2129092068 @default.
- W2351820106 cites W2147837976 @default.
- W2351820106 cites W2149751861 @default.
- W2351820106 cites W2152487659 @default.
- W2351820106 cites W2155800217 @default.
- W2351820106 cites W2157154485 @default.
- W2351820106 cites W2157432009 @default.
- W2351820106 cites W2158346779 @default.
- W2351820106 cites W2159252863 @default.
- W2351820106 cites W2159569412 @default.
- W2351820106 cites W2160333988 @default.
- W2351820106 cites W2163380799 @default.
- W2351820106 cites W2163583099 @default.
- W2351820106 cites W2171036487 @default.
- W2351820106 cites W2322798006 @default.
- W2351820106 doi "https://doi.org/10.1016/j.jhevol.2016.03.002" @default.
- W2351820106 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/27343770" @default.
- W2351820106 hasPublicationYear "2016" @default.
- W2351820106 type Work @default.
- W2351820106 sameAs 2351820106 @default.
- W2351820106 citedByCount "17" @default.
- W2351820106 countsByYear W23518201062017 @default.
- W2351820106 countsByYear W23518201062018 @default.
- W2351820106 countsByYear W23518201062019 @default.
- W2351820106 countsByYear W23518201062020 @default.
- W2351820106 countsByYear W23518201062021 @default.
- W2351820106 countsByYear W23518201062022 @default.
- W2351820106 countsByYear W23518201062023 @default.
- W2351820106 crossrefType "journal-article" @default.
- W2351820106 hasAuthorship W2351820106A5014110342 @default.