The International Commission on Stratigraphy(ICS)has a long tradition of producing international charts that communicate higher-order divisions of geological time and actual knowledge on the absolute numerical ages of...The International Commission on Stratigraphy(ICS)has a long tradition of producing international charts that communicate higher-order divisions of geological time and actual knowledge on the absolute numerical ages of their boundaries.The primary objective of ICS is to define precisely a global standard set of timecorrelative units(Systems,Series,and Stages)for stratigraphic successions worldwide.These units are,in turn,the basis for the Periods,Epochs and Ages of the Geological Time Scale.Setting an international global standard is fundamental for expressing geological knowledge.It is also of considerable pragmatic importance as it provides the framework through which regional-scale higher-resolution divisions can be linked,equated and collated.This is a status update on the International Chronostratigraphic Chart and the ICS website www.stratigraphy.org.展开更多
9-13 May 2011,Madrid,Spain The Iberian Peninsula is well known for its extensive outcrops of early Palaeozoic rocks and its high palaeo-latitudinal position during the Ordovician on the southern polar margin of Gondwa...9-13 May 2011,Madrid,Spain The Iberian Peninsula is well known for its extensive outcrops of early Palaeozoic rocks and its high palaeo-latitudinal position during the Ordovician on the southern polar margin of Gondwana,had profound affects on the faunas and facies of the time.It was therefore timely that more than 120 participants from 26 countries took part in the programme consisting of three days of lectures,a mid-symposium and pre-and postsymposium field trips,described herein.展开更多
文摘The International Commission on Stratigraphy(ICS)has a long tradition of producing international charts that communicate higher-order divisions of geological time and actual knowledge on the absolute numerical ages of their boundaries.The primary objective of ICS is to define precisely a global standard set of timecorrelative units(Systems,Series,and Stages)for stratigraphic successions worldwide.These units are,in turn,the basis for the Periods,Epochs and Ages of the Geological Time Scale.Setting an international global standard is fundamental for expressing geological knowledge.It is also of considerable pragmatic importance as it provides the framework through which regional-scale higher-resolution divisions can be linked,equated and collated.This is a status update on the International Chronostratigraphic Chart and the ICS website www.stratigraphy.org.
文摘9-13 May 2011,Madrid,Spain The Iberian Peninsula is well known for its extensive outcrops of early Palaeozoic rocks and its high palaeo-latitudinal position during the Ordovician on the southern polar margin of Gondwana,had profound affects on the faunas and facies of the time.It was therefore timely that more than 120 participants from 26 countries took part in the programme consisting of three days of lectures,a mid-symposium and pre-and postsymposium field trips,described herein.
