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DIC_GEOCHRON (410 rows)
Dictionary table holding codes, names and radiometric ages of geochronological intervals that can be used in BGS databases. It is this table that acts as the domain constraint on corporate data tables.

Displaying rows 261 to 280 of 410

Row	CODE	DESCRIPTION	RANK_CODE	TRANSLATION	MIN_AGE	MAX_AGE	MIN_AGE_TYPE_CODE	MIN_AGE_PLUS_OR_MINUS	MAX_AGE_TYPE_CODE	MAX_AGE_PLUS_OR_MINUS	COMMENTS	STATUS	USER_ENTERED	DATE_ENTERED	USER_UPDATED	DATE_UPDATED
261	QDW	CARADOC [OBSOLETE CONCEPT FOR THIS EPOCH]	EPOCH	Caradoc Epoch [Obsolete concept for epoch]	451	459	INTERP	0	INTERP	0	Used when base was placed at base of Costonian, no longer the accepted BGS definition; use O4 Caradoc.	O	TMCM	23-FEB-10	TMCM	09-NOV-11
262	QE	LLANDEILO [OBSOLETE AGE TERM: USE LLANDEILIAN]	EPOCH	Llandeilo Epoch [Obsolete age term]	460.9	464	DEFINITE	1.6	INTERP	0	Not on 2009 BGS Geological Time Chart; use O3 Llandeilian.	O	TMCM	23-FEB-10	TMCM	09-NOV-11
263	QF	LLANVIRN [OBSOLETE CONCEPT FOR THIS EPOCH: USE ABEREIDDIAN]	EPOCH	Llanvirn Epoch [Obsolete concept for epoch]	464	467	INTERP	0	INTERP	0	Used when Llanvirn epoch was defined as preceeding the Llandeilo, no longer the accepted BGS definition; use O2 Abereiddian.	O	TMCM	23-FEB-10	TMCM	09-NOV-11
264	QH	CAMBRIAN STAGE 5	AGE	Cambrian Stage 5	506.5	510	APPROX	0	APPROX	0		C	TMCM	22-SEP-09
265	QI	TERRENEUVIAN	EPOCH	Terreneuvian Epoch	521	542	APPROX	0	DEFINITE	1		C	TMCM	22-SEP-09
266	QL	COMLEY	EPOCH	Comley Epoch	508	528	INTERP	0	INTERP	0	British regional epoch.	C	TMCM	22-SEP-09
267	QMIS001	NEOPROTEROZOIC III [OBSOLETE AGE TERM: USE EDIACARAN]	PERIOD	Neoproterozoic III Period [Obsolete age term]	542	635	DEFINITE	1	DEFINITE	0	Not on 2009 BGS Geological Time Chart; use AD Ediacaran Period.	O	TMCM	22-SEP-09	TMCM	09-NOV-11
268	QMIS002	ECTASIAN	PERIOD	Ectasian Period	1200	1400	DEFINITE	0	DEFINITE	0		C	TMCM	22-SEP-09
269	QMIS003	STRATHERIAN	PERIOD	Stratherian Period	1600	1800	DEFINITE	0	DEFINITE	0		C	TMCM	22-SEP-09
270	QMIS004	ARCHAEAN	EON	Archaean Eon	2500	4000	DEFINITE	0	DEFINITE	0		C	TMCM	22-SEP-09
271	QMIS005A	PALAEOARCHAEAN	ERA	Palaeoarchaean Era	3200	3600	DEFINITE	0	DEFINITE	0		C	TMCM	22-SEP-09
272	QMIS005B	MARINE ISOTOPE STAGE 3	MIS	Marine Isotope Stage 3	.024	.059	QUAT	0	QUAT	0		C	TMCM	22-SEP-09
273	QMIS005C	MARINE ISOTOPE STAGE 38	MIS	Marine Isotope Stage 38	1.17	1.2	INTERP	0	INTERP	0		C	TMCM	22-SEP-09
274	QMIS005D	MARINE ISOTOPE STAGE 44	MIS	Marine Isotope Stage 44	1.31	1.34	INTERP	0	INTERP	0		C	TMCM	22-SEP-09
275	QMIS005E	MARINE ISOTOPE STAGE 49	MIS	Marine Isotope Stage 49	1.43	1.46	INTERP	0	INTERP	0		C	TMCM	22-SEP-09
276	QMIS006	MARINE ISOTOPE STAGE 55	MIS	Marine Isotope Stage 55	1.57	1.6	INTERP	0	INTERP	0		C	TMCM	22-SEP-09
277	QMIS007	PLEISTOCENE [OBSOLETE CONCEPT FOR THIS EPOCH]	EPOCH	Pleistocene Epoch [Obsolete concept for epoch]	.0117	1.806	DEFINITE	0	DEFINITE	0	Used when Plio-Pleistocene boundary was placed at 1.806 MA, no longer the accepted BGS definition; use QP Pleistocene.	O	TMCM	16-FEB-10	TMCM	09-NOV-11
278	QMIS008	MARINE ISOTOPE STAGE 35	MIS	Marine Isotope Stage 35	1.1	1.13	INTERP	0	INTERP	0		C	TMCM	22-SEP-09
279	QMIS009	MARINE ISOTOPE STAGE 100	MIS	Marine Isotope Stage 100	2.37	2.4	INTERP	0	INTERP	0		C	TMCM	22-SEP-09
280	QMIS010	UFIMIAN-KAZANIAN [OBSOLETE AGE TERM: CLOSEST CURRENT TERM IS GUADALUPIAN]	AGE	Ufimian-Kazanian Age [Obsolete age term]	263	270.6	INTERP	0	DEFINITE	.7	Not on 2009 BGS Geological Time Chart; no direct replacement term.	O	TMCM	22-SEP-09	TMCM	09-NOV-11

Displaying rows 261 to 280 of 410