enhmstratigraphy module - fieldmuseum/EMu-Documentation GitHub Wiki

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What does an enhmstratigraphy record represent?

A record in the stratigraphy module represents a unit of time in the geologic time scale or strata in the rock record, or a cultural period of time. This is used to document 1) the geologic age of a specimen or artifact, 2) its position in the rock column 3) and correlate it with other specimens or artifacts.

Sub class Status

Subclassed?: Yes The Field Museum stratigraphy module is derived from the Natural History Museum module of the same name

Tab Switching:

Column Name: SumRecordClassification
Lookup List: Stratigraphy Classification
Tab switching: Yes
Note: Query tabs same as insert.

Chronostratigraphy:

AllSumTab; AllChrTab; [AllRefTab; AllTasTab; AllNteTab; AllMedTab; AllSecTab; AllAdtTab; AllAdmTab]

Lithostratigraphy:

AllSumTab; AllLitTab; AllOthTab; AllAbsTab; AllRelTab; [AllRefTab; AllTasTab; AllNteTab; AllMedTab; AllSecTab; AllAdtTab; AllAdmTab]

Biostratigraphy:

AllSumTab; AllBioTab; AllAbsTab; AllRelTab; [AllRefTab; AllTasTab; AllNteTab; AllMedTab; AllSecTab; AllAdtTab; AllAdmTab]

Sequence:

AllSumTab; AllOthTab; [AllRefTab; AllTasTab; AllNteTab; AllMedTab; AllSecTab; AllAdtTab; AllAdmTab]

Cultural:

AllSumTab; AllHumTab; AllAbsTab; AllRelTab; [AllRefTab; AllTasTab; AllNteTab; AllMedTab; AllSecTab; AllAdtTab; AllAdmTab]

Record Types:

Chronostratigraphy:

A chronostrat record refers to the absolute age or geologic time. The primary unit is a geologic period.

Lithostratigraphy:

A lithostrat record refers to variation in rock composition (lithology) as a way to map and order rock units. The primary unit is a formation.

Biostratigraphy:

Also refered to as paleontologic stratigraphy refers to fossils and evolution as a way to date and order rock units. The primary unit is a zone.

Chronometric Age:

A chronometric age record uses the fields on the Absolute Date tab to document the chronometric age determined for a cultural object (or part of an object) using a method such as Dendrochronology.

Sequence:

A Sequence record refers to deals with linking sedimentary rock units using unconformities as boundaries between genetically related sedimentary packages. The primary unit is a cycle.

Cultural:

A cultural strat record uses human artifacts as a way to date and order rock units. The primary unit is a an age or period

Record Structure:

Flat; There are no attachments to other enhmstratigraphy records.

Fields

Mandatory

SumRecordClassification

Unique

Ditto Skip

Insert Deafults

Query Defaults

Software Dependencies

Resources -> Tools

Summary String(s)

Requests and updates to the summary string should be submitted as issues and tagged enhmstratigraphy. When approved they should be documented in structural changes.

Default

ChrPeriodFrom_tab + “, “ + ChrEpochFrom_tab + “, “ + ChrStageFrom_tab + “. “ + AbsTimeSystemFrom_tab

e.g.(5814) “Jurassic, Middle Jurassic, Bathonian. ICS/IUGS”

Stratigraphy Classification (SumRecordClassification)

= Chronostratigraphy

ChrPeriodFrom_tab + “, “ + ChrEpochFrom_tab + “, “ + ChrStageFrom_tab + “. “ + AbsTimeSystemFrom_tab

e.g.(5814) “Jurassic, Middle Jurassic, Bathonian. ICS/IUGS”

= Lithostratigraphy

LitSupergroupFrom_tab + ” Supergroup, “ + LitGroupFrom_tab + “ Group, “ + LitFormationFrom_tab + “ Formation, “ + LitMemberFrom_tab +” Member, ” + LitBedFrom_tab + ”Bed, ” + OthGeoProvince_tab + “.”

e.g. (135) Fairholme Group, Southesk Formation, Peechee Member
e.g. (1773)  Galena Group, Wise Lake Formation, Stewartville Member, 6 inches below the top of Stewartville Member Bed

If LitFormationFrom_tab includes "Shale", "Dolomite", or "Limestone", "Formation" is not appended to the value.

= Biostratigraphy

BioSuperzoneFrom_tab + “ Superzone, “ + BioZoneFrom_tab + “ Zone, “ + BioSubzoneFrom_tab + “ Subzone, “ + BioHorizonFrom_tab “ Horizon” + “ [“ + BioTaxonomicGroup_tab - comma-delimitted list + “]”

e.g (3020) marginifera Zone, Lower Subzone, [Conodonts]
e.g (3078) Rafinesquina Zone, [brachiopod]

= Sequence

OthSequenceOrder_tab + “ Order, “ + OthSequenceName_tab + “ Sequence, “ + OthSequenceLocation_tab + “.”

e.g. none

= Cultural

HumMainHumanCultInterpretation

e.g.(2414) Early Paleolithic

= Chronometric Age

AbsFrom_tab[first value] + “, “ + AbsErrorsFrom_tab[first value] + “, “ + AbsUnitsFrom_tab[first value]

e.g.none