Chronometric Dating

Chronometric Dating

Part of the Dolores Archaeological Program project

Year: 1985

Summary

The results of chronometric analysis on special specimen samples collected for dating can be found in this dataset. Samples are linked to basic provenience data such as site and field specimen number. The temporal range for each sample will be indicated by variables for earliest and latest dates. These variables give the innermost and outermost dates of wood submitted for dendrochronological dating and their corresponding Tree-Ring Lab symbols indicating how close the date provided is to the actual cutting date for the tree will be denoted by a factor variable. For early and late archaeomagnetic dates that are not clearly defined, factor variables will contain “pre” and “post” prefixes. Context and sample integrity were considered when assigning confidence intervals. These values range from low to high, but a recode of this variable also contains a description of their relative utility. Archaeomagnetic entries also include an indication as to whether the sample had yielded an interpretable date, was discarded, recalibrated, or was related to dendrochronological samples. Length, diameter, and the species of sampled timber for tree-ring data are provided, as well as an approximation of the structural element from which they were taken. Since the majority of dateable material has been derived from botanical resources, treatment of the methodological procedures used in their recovery can be found in the environmental studies mid-level research design (Petersen, Clay et al. 1986). Discussion of research design as it relates to archaeomagnetic dating can be found in Hathaway (1988) and Hathaway and Eighmy (1984). Variables for the chronometric dating dataset have been described by Wilshusen et al. (1999). In most cases, their descriptions are suitable for use as metadata and have been repeated almost verbatim here. Selected resources from the collection of published and unpublished DAP reports may have been used for clarification in some cases and will be appropriately referenced.

Cite this Record

Chronometric Dating. 1985 ( tDAR id: 6206) ; doi:10.6067/XCV8KW5D5P

Data Set Structure

Measurement Column

Count Column

Coded Column

Filename Column

Integration Column (has Ontology)

Table Information: dap-date10

Column Name	Data Type	Type	Category	Coding Sheet	Ontology	Search
ldate	The latest date in a dendrochronology sample.
ldate	BIGINT	Uncoded Value	Dating Sample	none	none	true
site	Site number refers only to the sequential position of a site within a single Smithsonian state and county designation. To obtain a full site number for any entry, this value must be appended to the Smithsonian state and county designation.
site	BIGINT	Uncoded Value	Provenience and Context : Horizontal Location	none	none	true
c2	This variable indicates the length of length of a specimen submitted for dendrochronological analysis.
c2	VARCHAR	Uncoded Value	Macrobotanical : Other	none	none	true
c4	This variable describes the structural function of the timber sampled for dendrochronological analysis.
c4	VARCHAR	Uncoded Value	Macrobotanical	none	none	true
oconf	Discusses the confidence in a sample that applies to all things beyond the dating confidence.
oconf	VARCHAR	Uncoded Value	uncategorized	none	none	true
samptyp	DAP analysts were able to select from a range of variables when describing the type of sample collected.
samptyp	VARCHAR	Uncoded Value	Lookup : Description	none	none	true
edate	The earliest date shown in a dendrochronology sample.
edate	BIGINT	Uncoded Value	Dating Sample	none	none	true
lfact	Factors effecting the late date in a dendrochronology sample.
lfact	VARCHAR	Uncoded Value	Dating Sample	none	none	true
sampno	Each sample's unique number is indicated by this variable.
sampno	BIGINT	Uncoded Value	Lookup : Code	none	none	true
ofact	Describes the possible botanical source of a sample.
ofact	VARCHAR	Uncoded Value	Provenience and Context	none	none	true
c3	This variable indicates the diameter of length of a specimen submitted for dendrochronological analysis.
c3	VARCHAR	Uncoded Value	Macrobotanical	none	none	true
cdept	The Anasazi Heritage Center has given each specimen several unique codes, including cdept, to facilitate management of their DAP collections. This value specifies the tool department to which each record belongs.
cdept	VARCHAR	Uncoded Value	Lookup : Description	none	none	true
csiteid	The Anasazi Heritage Center has given each specimen several unique codes, including csiteid, to facilitate management of their DAP collections. This value denotes the entry's corresponding Smithsonian site number.
csiteid	VARCHAR	Uncoded Value	Provenience and Context : Horizontal Location	none	none	true
efact	Factors effecting the early date in a dendrochronology sample.
efact	VARCHAR	Uncoded Value	Provenience and Context	none	none	true
stco	To obtain a full site designation for any entry, append the Smithsonian site number to this variable.
stco	VARCHAR	Uncoded Value	Provenience and Context : Horizontal Location	none	none	true
c1	This variable is used to indicate the presence of related dendrochronological samples, or whether archaeomagnetic samples had yielded an interpretable date or were discarded.
c1	VARCHAR	Uncoded Value	Lookup : Description	none	none	true
caccnid	The Anasazi Heritage Center has given each specimen several unique codes, including caccnid, to facilitate management of their DAP collections. The first digits of this value indicate the year that it was accessioned.
caccnid	DOUBLE	Uncoded Value	Lookup : Code	none	none	true
cobjectid	The Anasazi Heritage Center has given each specimen several unique codes, including cobjectid, to facilitate management of their DAP collections. Since this value is used in association with the AHC ARGUS database for tracking the location of a record, it is important for any researcher requesting objects from the curator.
cobjectid	VARCHAR	Uncoded Value	Lookup : Code	none	none	true
cconf	This variable was used to describe the relative confidence in the date from a particular sample.
cconf	VARCHAR	Uncoded Value	Dating Sample	none	none	true
fs	The most basic type of provenience data recorded for all information obtained during DAP fieldwork is the field specimen number. These values are sequentially assigned to unique vertical and horizontal locations within each site.
fs	BIGINT	Uncoded Value	Lookup : Code	none	none	true