Published on
McMurdo Dry Valleys LTER
(
https://mcm.lternet.edu
)
Summary
Abstract:
As part of a collaborative investigation between researchers at Rice University, Arkansas State University, University of Rochester, and Ohio State University, lakes of the McMurdo Dry Valleys were sampled at discreet depth intervals during the 2005-2006 field season. Sample splits were subsequently analyzed for chemical and isotopic composition of both gases and dissolved ions, as well as dissolved organic carbon. In addition, cryogenic salts were sampled in the surrounding lake shores in order to determine the salt sources. Gravity cores were also obtained and in the case of Lake Vanda, a white precipitate was recovered from the lake bottom.
Presented in this file is the mineralogic composition of salt crusts that were collected on the surface of sediment and rocks surrounding the lakes, as well as the lake-bottom precipitate from Lake Vanda. The results are based on low-temperature XRD determinations, and Rietveld refinement of whole peaks.
Date Range:
December 21, 2005
to
December 27, 2005
Dataset(s)
Variables (click to expand):
DATASET_CODE
Label:
Definition:
Table Identifier
Type:
Nominal
Missing values:
None specified
LOCATION_NAME
Label:
Location Name
Definition:
Name of lake where measurement was made
Type:
Nominal
Missing values:
None specified
Location_Type
Label:
Definition:
Sample type description and/or location
Type:
Nominal
Missing values:
None specified
Sample_ID
Label:
Definition:
Sample identification code
Type:
Nominal
Missing values:
None specified
Latitude
Label:
Definition:
Sample Latitude
Type:
Physical quantity
Unit:
degree
Maximum:
Not specified
Minimum:
Not specified
Precision:
Not specified
Missing values:
Null = None given
Longitude
Label:
Definition:
Sample Longitude
Type:
Physical quantity
Unit:
degree
Maximum:
Not specified
Minimum:
Not specified
Precision:
Not specified
Missing values:
Null = None given
Date_time
Label:
Definition:
Date sample was collected
Type:
Date/time
Date format:
mm/dd/yyyy
Missing values:
None specified
Halite
Label:
Definition:
Percent composition of halite
Type:
Physical quantity
Unit:
dimensionless
Maximum:
100
Minimum:
0
Precision:
Not specified
Missing values:
NULL = None given
Antarcticite
Label:
Definition:
Percent composition of Antarcticite
Type:
Physical quantity
Unit:
dimensionless
Maximum:
100
Minimum:
0
Precision:
Not specified
Missing values:
NULL = None given
Thenardite
Label:
Definition:
Percent composition of Thenardite
Type:
Physical quantity
Unit:
dimensionless
Maximum:
100
Minimum:
0
Precision:
Not specified
Missing values:
NULL = None given
Mirabilite
Label:
Definition:
Percent composition of Mirabilite
Type:
Physical quantity
Unit:
dimensionless
Maximum:
100
Minimum:
0
Precision:
Not specified
Missing values:
NULL = None given
Gypsum
Label:
Definition:
Percent composition of Gypsum
Type:
Physical quantity
Unit:
dimensionless
Maximum:
100
Minimum:
0
Precision:
Not specified
Missing values:
NULL = None given
Calcite
Label:
Definition:
Percent composition of Calcite
Type:
Physical quantity
Unit:
dimensionless
Maximum:
100
Minimum:
0
Precision:
Not specified
Missing values:
NULL = None given
Aragonite
Label:
Definition:
Percent composition of Aragonite
Type:
Physical quantity
Unit:
dimensionless
Maximum:
100
Minimum:
0
Precision:
Not specified
Missing values:
NULL = None given
Quartz
Label:
Definition:
Percent composition of Quartz
Type:
Physical quantity
Unit:
dimensionless
Maximum:
100
Minimum:
0
Precision:
Not specified
Missing values:
NULL = None given
Albite
Label:
Definition:
Percent composition of Albite
Type:
Physical quantity
Unit:
dimensionless
Maximum:
100
Minimum:
0
Precision:
Not specified
Missing values:
NULL = None given
File:
ANCILLARY_SNYDER_SALTS.csv
(4.11 KB)
Short name:
snyder_salts
Dataset ID:
6003
People
Principal Investigator(s):
Glen Snyder
Contact:
McMurdo Dry Valleys LTER
Associated Personnel:
Data Manager
Chris Gardner
Data Manager
Inigo San Gil
Related
Related publications:
Dating water and solute additions to ice-covered Antarctic lakes
Halogen geochemistry of the McMurdo Dry Valleys Lakes, Antarctica: clues to the origin of solutes and lake evolution
Source URL:
https://mcm.lternet.edu/content/mineralogic-composition-cryogenic-evaporites-determined-low-temperature-x-ray-diffactometry