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| Value | Definition |
|---|---|
| Ph | Hermit Formation |
| Pkf | Kaibab Formation, Fossil Mountain Member |
| Pkh | Kaibab Formation, Harrisburg Member |
| Ptb | Toroweap Formation, Brady Canyon Member |
| Pts | Toroweap Formation, Seligman Member |
| Ptw | Toroweap Formation, Woods Ranch Member |
| Qa1 | Young alluvial fan deposits |
| Qa2 | Older alluvial fan deposits |
| Qab | Antelope Knoll Basalt, basalt flows |
| Qaf | Artificial fill and quarries |
| Qap | Antelope Knoll Basalt, pyroclastic deposits |
| Qb1 | Quaternary basalts, undivided, basalt flows |
| Qc | Colluvial deposits |
| Qcbb | Basalt of Craigs Knoll and Berry Knoll, basalt flows |
| Qcbi | Basalt of Craigs Knoll and Berry Knoll, intrusive dike or neck |
| Qcbp | Basalt of Craigs Knoll and Berry Knoll, pyroclastic deposits |
| Qf | Floodplain deposits |
| Qg1 | Young terrace-gravel deposits |
| Qg2 | Intermediate-age terrace-gravel deposits |
| Qg3 | Older terrace-gravel deposits |
| Qgrb | Basalt of Graham Ranch, basalt flows |
| Qgri | Basalt of Graham Ranch, intrusive plug or dike |
| Qgrp | Basalt of Graham Ranch, pyroclastic deposits |
| Qhb | Basalt of Hat knoll, basalt flows |
| Qhi | Basalt of Hat knoll, intrusive dike or neck |
| Qhp | Basalt of Hat knoll, pyroclastic deposits |
| Qi | Quaternary basalts, undivided, basalt dike |
| Ql | Landslide deposits |
| Qltb | Basalt of Larimore Tank, basalt flows |
| Qlti | Basalt of Larimore Tank, intrusive dike or neck |
| Qltp | Basalt of Larimore Tank, pyroclastic deposits |
| Qmb | Basalt of Moriah Knoll, basalt flows |
| Qmkb | Basalt of Maryland Knoll, basalt flows |
| Qmkp | Basalt of Maryland Knoll, pyroclastic deposits |
| Qmp | Basalt of Moriah Knoll, pyroclastic deposits |
| Qp1 | Quaternary basalts, undivided, pyroclastic deposits |
| Qs | Stream-channel alluvium |
| Qsb | Basalt of Seven Knolls, basalt flows |
| Qsi | Basalt of Seven Knolls, intrusive dike or neck |
| Qskb | Basalt of Spencer Knoll, basalt flows |
| Qskp | Basalt of Spencer Knoll, pyroclastic deposits |
| Qsp | Basalt of Seven Knolls, pyroclastic deposits |
| Qt | Talus deposits |
| Qv | Valley-fill deposits |
| TRml | Moenkopi Formation, lower red member |
| TRmlt | Moenkopi Formation, lower red member and Timpoweap Member, undivided |
| TRmm | Moenkopi Formation, middle red member |
| TRms | Moenkopi Formation, Shnabkaib Member |
| TRmt | Moenkopi Formation, Timpoweap Member |
| TRmv | Moenkopi Formation, Virgin Limestone Member |
| Value | Definition |
|---|---|
| contact_certain | Boundary between two mapped units that retains the original depositional or intrusive relationship. The contact has been observed or is closely constrained, so it is well located as described in Positional_Accuracy. |
| landslide_scarp | Line demarcating the headwall of a landslide, also serving as a contact between a landslide unit (Ql) and the adjacent lithologic unit. This feature has been well-located as described in Positional_Accuracy. |
| map_boundary | Extent of mapped area. |
| normal_flt_certain | Structural boundary between mapped units or structural discontinuity within a mapped unit that has experienced relative offset between the rock bodies on either side of the fault. The fault has been observed or is closely constrained, so it is well located as described in Positional_Accuracy. |
| normal_flt_approx | Structural boundary between mapped units or structural discontinuity within a mapped unit that has experienced relative offset between the rock bodies on either side of the fault. The fault has not been observed, so it is not well located as described in Positional_Accuracy. |
| normal_flt_concealed | Structural boundary between mapped units or structural discontinuity within a mapped unit that has experienced relative offset between the rock bodies on either side of the fault. The fault is obscured by overlying mapped units and it's trace is fairly apparent, so it is not well located as described in Positional_Accuracy. |
| normal_flt_inferred | Structural boundary between mapped units or structural discontinuity within a mapped unit that has experienced relative offset between the rock bodies on either side of the fault. The fault is obscured by overlying mapped units and it's trace is uncertain, so it is not well located as described in Positional_Accuracy. |
| Value | Definition |
|---|---|
| fault_ball_fill | Arcmarker attached to an arc describing the nature of displacement along a fault. Side of arc with bar and ball is the side with downthrown displacement. |
| xx | No arcmarker is to be attached to an arc containing the xx value in the PTTYPE field. |
| Value | Definition |
|---|---|
| anticline_certain_red | The surface trace of the axis of an anticline. The axis cannot be observed, but the location is constrained to be within about 5 mm at map scale or about 16 meters on the ground. |
| anticline_concealed_red | The surface trace of the axis of an anticline. The axis cannot be observed, but the location is constrained to be within about 5 mm at map scale or about 16 meters on the ground. The axis is concealed by younger units but fairly apparent. |
| basalt_flow_direction | Interpreted direction of lava flow as seen in a basalt flow unit. Arrowhead points in direction of flow. |
| monocline_certain_red | The surface trace of the axis of a monocline. The axis cannot be observed, but the location is constrained to be within about 5 mm at map scale or about 16 meters on the ground. |
| monocline_concealed_red | The surface trace of the axis of a monocline. The axis cannot be observed, but the location is constrained to be within about 5 mm at map scale or about 16 meters on the ground. The axis is concealed by younger units but fairly apparent. |
| plunging_anticline_concealed_red | The surface trace of the axis of a plunging anticline. The axis cannot be observed, but the location is constrained to be within about 5 mm at map scale or about 16 meters on the ground. The axis is concealed by younger units but fairly apparent. |
| plunging_anticline_red | The surface trace of the axis of a plunging anticline. The axis cannot be observed, but the location is constrained to be within about 5 mm at map scale or about 16 meters on the ground. |
| plunging_syncline_concealed_red | The surface trace of the axis of a plunging syncline. The axis cannot be observed, but the location is constrained to be within about 5 mm at map scale or about 16 meters on the ground. The axis is concealed by younger units but fairly apparent. |
| plunging_syncline_red | The surface trace of the axis of a plunging syncline. The axis cannot be observed, but the location is constrained to be within about 5 mm at map scale or about 16 meters on the ground. |
| syncline_certain_red | The surface trace of the axis of a syncline. The axis cannot be observed, but the location is constrained to be within about 5 mm at map scale or about 16 meters on the ground. |
| syncline_concealed_red | The surface trace of the axis of a syncline. The axis cannot be observed, but the location is constrained to be within about 5 mm at map scale or about 16 meters on the ground. The axis is concealed by younger units but fairly apparent. |
| syncline_inferred_red | The surface trace of the axis of a syncline. The axis is obscured by overlying mapped units and it's trace is uncertain, but the location is constrained to be about 5 mm at map scale or within about 16 meters on the ground. |
| Value | Definition |
|---|---|
| anticline_red | Point element placed on line indicating the anticlinal nature of the particular fold axis. |
| monocline_red | Point element placed on line indicating the monoclinal nature of the particular fold axis. |
| syncline_red | Point element placed on line indicating the synclinal nature of the particular fold axis. |
| xx | No arcmarker is to be attached to an arc containing the xx value in the PTTYPE field. |
| Value | Definition |
|---|---|
| bedding | Originally horizontal sedimentary layers were observed and measured at this location. |
| approx_bedding | Originally horizontal sedimentary layers were observed and estimated at this location. |
| collapse_structure | Location of a circular collapse structure characterized by strata dipping inward toward a central point was observed. May reflect collapse of a deep-seated breccia pipe. |
| sinkhole | Observed location of an enclosed depression or cave. |
| vertical_joint | Orientation of vertical rock fracture without displacement was measured at this location. |
| volcanic_vent | Observed location of volcanic vent. |
| Range of values | |
|---|---|
| Minimum: | 0 |
| Maximum: | 90 |
| Units: | degrees |
| Resolution: | 1 |
| Range of values | |
|---|---|
| Minimum: | 0 |
| Maximum: | 359 |
| Units: | degrees |
| Resolution: | 1 |
This digital database was prepared by Sue Priest. Technical review was provided by Wendell Duffield and Paul Stone of the U.S. Geological Survey. Digital review was provided by Debra Block of the U.S. Geological Survey.
Prepared in cooperation with the National Park Service and the Bureau of Land Management.
The geologic map of Upper Clayhole Valley and vicinity covers part of the Arizona Strip north of Grand Canyon. The map is part of a cooperative U.S. Geological Survey, National Park Service, and Bureau of Land Management project to provide geologic information for areas within the newly established Grand Canyon-Parashant National Monument. This map fills in one of the remaining areas where uniform quality geologic mapping was needed. The geologic information will be useful for future resource management studies for federal, state, and private agencies.
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Are there legal restrictions on access or use of the data?Access_Constraints: None
Use_Constraints:Uses of this digital geologic map should not violate the spatial resolution of the map area (1:31,680) even though the digital data form removes the constraint of scale on a paper map. The accuracy inherent in map scale is also present in digital format. At a scale larger than 1:31,680, higher resolution data is not available and will not yield greater real detail. Where this database is used in combination with other data of higher resolution, the resolution of the combined output will be limited by the lower resolution of these data.
Any hardcopies utilizing these datasets shall clearly indicate their source. If users modify the data in any way they are obligated to describe the types of modifications they have performed. User specifically agrees not to misrepresent these datasets, nor to imply that changes they made were approved by the U.S. Geological Survey.
The U.S. Geological Survey (USGS) provides these geographic data "as is." The USGS makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. The USGS further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers at the USGS, no warranty, expressed or implied, is made by the USGS regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty.
In no event shall the USGS have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of delivery, installation, operation, or support by USGS.
| Data format: | Geologic units (cv_poly); folds, basalt flow lines (cv_ fold); point data including strike and dip, collapse features, sinkholes, and volcanic vents (cv_dip); and ancillary GIS files in format ARCE (version 8.1) Size: 12 |
|---|---|
| Network links: |
http://pubs.usgs.gov/mf/2003/2418/cvdb.zip |
