tbl_tephra_dates

0 rows


Description

Records tephrachronology-based sample dates, including associated uncertainties and additional notes.

Columns

Column Type Size Nulls Auto Children Parents Comments
tephra_date_id int4 10 √

Primary key (automatically incremented).
analysis_entity_id int8 19
tbl_analysis_entities.analysis_entity_id fk_tephra_dates_analysis_entity_id R

Identifies the specific analysis entity associated with this record.
date_updated timestamptz 35,6 √
notes text 2147483647 √

Optional field for additional information or comments related to the tephra date.
tephra_id int4 10
tbl_tephras.tephra_id fk_tephra_dates_tephra_id R

Specifies the the specific tephra layer related to the date.
dating_uncertainty_id int4 10 √
tbl_dating_uncertainty.dating_uncertainty_id fk_tephra_dates_dating_uncertainty_id R

Specifies the uncertainty category related to the dating method used.

Indexes

Constraint Name Type Sort Column(s)
tbl_tephra_dates_pkey Primary key Asc tephra_date_id

Relationships

Close relationships within degrees of separation