http://ussher.org.uk/wp-content/uploads/journal/2003/09-Page_et_al_2003.pdf WebJan 1, 2008 · Macrofossils (belemnites, Gryphaea and ammonites) from the Callovian-Oxfordian boundary at Redcliff Point, Weymouth, Dorset were examined using petrographic, isotopic and geochemical methods to investigate the environmental conditions within which they were formed. The belemnites (Hibolithes hastata), Gryphaea and ammonites …
Proposal for the Thuoux section as a candidate for the …
WebThe Global Stratotype Section and Point (GSSP) of the Permian-Triassic boundary has been ratified by IUGS. The boundary is defined at the base of Hindeodus parvus horizon, i.e. the base of Bed 27c of Meishan sec-tion D, Changxing County, Zhejiang Province, South China. Historic preamble The Permian-Triassic Boundary Working Group (PTBWG) was Websubdivision of an age, not used by the ICS timescale. In the stratigraphy sub-discipline of geology, a Global Standard Stratigraphic Age, abbreviated GSSA, is a chronological reference point and criterion in the geologic record used to define the boundaries (an internationally sanctioned benchmark point) between different geological periods ... clyde mccullough stats
Integrated Stratigraphy of the Potential Candidate Oxfordian GSSP …
WebA GSSP, more fully a Global Boundary Stratotype Section and Point, is an internationally agreed point which defines the start of a stage on the geologic time scale. ... Redcliff Point, Dorset, England; Savouron, Provence, France; Horizon of Cardioceras redcliffense . WebJan 1, 2007 · In the course of the stratigraphical and palaeontological investigations for the Global Stratotype Section and Point (GSSP) for the base of the Oxfordian Stage at … WebJan 1, 2014 · In this context, the Redcliff Point-Ham Cliff section (Weymouth, UK) has been proposed as a candidate for the Callovian–Oxfordian boundary GSSP, and the Savournon … clyde mcgregor heartland