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The Status column has a "golden spike" for every GSSP which has been formally agreed by the ICS. Those without have only candidate sections which have not yet been formally ratified. The clock stands for times that are currently defined only by an age. The "Defining markers" column lists the evidence in the rock used to define the boundary.
A geologic section has to fulfill a set of criteria to be adapted as a GSSP by the ICS. The following list summarizes the criteria: [2] [3] A GSSP has to define the lower boundary of a geologic stage. The lower boundary has to be defined using a primary marker (usually first appearance datum of a fossil species).
Status GCUX GIAC Certified UNIX Security Administrator SEC506 Unobtainable [11] GPPA GIAC Certified Perimeter Protection Analyst Unobtainable. [12] Formerly GCFW (Certified Firewall Analyst) GSSP-JAVA GIAC Secure Software Programmer Java DEV541 Unobtainable [13] GSSP-.NET GIAC Secure Software Programmer .NET DEV544 Unobtainable [14]
In the geologic time scale, the Greenlandian is the earliest age or lowest stage of the Holocene Epoch or Series, part of the Quaternary. [3] [4] Beginning in 11,650 BP (9701 BCE or 300 HE) and ending with the 8.2-kiloyear event (c. 8200–8300 BP, 6200–6300 BCE, 3600–3700 HE), it is the earliest of three sub-divisions of the Holocene. [5]
Status; Content: 1: Specifies the content to divide into columns. String: optional: Columns / Column width: colwidth: Specifies the width of columns, and determines dynamically the number of columns based on screen width; more columns will be shown on wider displays. Default 30 Example 20em: String: optional: CSS style: style: Specifies any ...
The Gelasian was introduced in the geologic timescale in 1998. [5] It is named after the Sicilian city of Gela in the south of the island. In 2009 it was moved from the Pliocene to the Pleistocene so that the geologic time scale would be more consistent with the key changes in Earth's climate, oceans, and biota that occurred 2.58 million years ago.
In the geologic timescale, the Artinskian is an age or stage of the Permian.It is a subdivision of the Cisuralian Epoch or Series.The Artinskian likely lasted between 290.1 and 283.3 million years ago (Ma) according to the most recent revision of the International Commission on Stratigraphy (ICS) in 2022. [3]
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