BCCZO -- Geology, Geomorphology -- Boulder Creek catchment and vicinity -- (2006)

OVERVIEW

Description/Abstract

These data accompany the analysis of regolith weathering across ~940 km2 of the Front Range (Colorado, USA) described by Dethier & Lazarus (2006).

Collected data from 1872 paper records of well-drillers' logs held on file at the Colorado Department of Water Resources (Denver office). We used every interpretable record from the Allens Park, Eldorado Springs, Gold Hill, Nederland, Tungsten, and Ward quadrangles. We recorded the thickness of overburden, alluvium, and highly weathered regolith, along with the total weathered thickness, depth to fresh bedrock, total well depth, and any drillers’ notes. We then digitized well locations (and their associated data) on topographic quadrangles in ESRI ArcMap. The maximum probable location error for any well in the dataset is the area of a 1/16 section (approximately 0.16 km2). See Dethier & Lazarus (2016) a detailed description of the methods.

Creator/Author

David P. Dethier|Eli D. Lazarus

CZOs

Boulder

Contact

bcczodata@colorado.edu

Subtitle

Geomorphic inferences from regolith thickness, chemical denudation and CRN erosion rates near the glacial limit

SUBJECTS

Disciplines

Geomorphology|Geochemistry / Mineralogy|Geology / Chronology|Geophysics

Topics

Geology|Geomorphology

Keywords

regolith|weathering

Variables

OBJECT_ID & NEW_ID (identification index)| WELL_NUMBE (well number assigned by the Colorado Department of Water Resources)| POINT_X (UTM Northing – NAD 1983 UTM Zone 13N)| POINT_Y (UTM Easting – NAD 1983 UTM Zone 13N)| QUADRANGLE (Colorado state 7.5' quadrangle)| TOWNSHIP (township notation in quadrangle)| RANGE (range notation in quadrangle)| SECTION (section number in quadrangle)| QUARTER (quarter location within QUARTER_1)| QUARTER_1 (quarter location within section)| OVERBURDEN & OVRBRDN_M (overburden thickness in ft & m)| ALLUVIAL_ & ALLUVIAL_M (alluvial thickness in ft & m)| HIGHLY & HIGHLY_M (highly weathered thickness in ft & m)| TOTAL & TOTAL_M (total weathered thicknessin ft & m)| DEPTH & DEPTH_M (depth to bedrock in ft & m)| MINIMUM & MINMM_M (minimum drilled well depth in ft & m)| DIST_FLTS (using geologic map of Colorado by Green (1992) distance to nearest fault or dike in m)| DIST_STREAMS (using geologic map of Colorado by Green (1992) distance to nearest third-order stream (or larger) in m)| ROCK_TYPE (code corresponds to geologic unit in geologic map of Colorado by Green (1992): 1 = sedimentary units; 2 = Od; 3 = Ogo; 4 = Yg; 5 = Xg; 6 = Xb; 7 = Xq; 8 = Xfh; 9 = Tki; 10 = Tgv; 11 = water)| SLOPE (approximate local slope in degrees)| NOTES (well drillers' notes)

Variables ODM2

Alluvium depth|Water depth|Distance|Groundwater Depth|Recorder code

TEMPORAL

Date Start

2006-01-01

Date End

2006-12-31

SPATIAL

Field Areas

Boulder Creek Watershed

Location

Boulder Creek catchment and vicinity

North latitude

40.01465

South latitude

39.96163967

West longitude

-105.5057898

East longitude

-105.3228601

REFERENCE

Citation

David P. Dethier, Eli D.Lazarus. 2006 Geomorphic inferences from regolith thickness, chemical denudation and CRN erosion rates near the glacial limit, Boulder Creek catchment and vicinity, Colorado, Geomorphology, Volume 75, Issues 3–4, May 2006, Pages 384-399

CZO ID

6903

External Links

Geomorphology article |