Serendipitously, they chose to work in a deep basin off California, where an independent and robust age model had already been developed. PAS by an APA Ph D scholarship and ANU Vice-Chancellor’s Scholarship.
Chondrules are the dominant component of chondritic meteorites and attest to high-temperature transient heating events within the protoplanetary disk.
For two of the three lakes, there was a significant difference in average sediment accumulation rate during the past 33 yrs as calculated from Pb in the recent cores.Pb has been used for more than two decades to provide the geochronology of annually deposited sediments and to construct pollution histories.Evidence from some lakes suggests that this radionuclide may be adequately mobile to compromise dating reliability.Thus Goldberg (1963) developed the first principles of the 210Pb dating method, which was soon followed by a paper by Crozaz et al.(1964), who examined accumulation history of Antarctic snow using 210Pb. (1972, 1973) adapted this technique to unravel sediment deposition and accumulation records in deep-sea environments. JP was funded by NERC postdoctoral fellowship NE/H01313X/2, with support of the Oxford laboratories from an Advanced ERC grant (NEWISOTOPEGEOSCIENCE) to ANH.