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| USGS Coastal Carolina Project 2004 - Hope Plantation |
Latitude/Longitude
Latitude and Longitude are measured in StatePlane meters.
| Latitude | Longitude | |
|---|---|---|
| in DMS (degrees, minutes, seconds) | 36° 01' 45.33" | -77° 01' 05.61" |
| in DD (Decimal Degrees) | 36.0292 | -77.0182 |
| Northings (meters) | Eastings (meters) | Datum | Zone | Grid |
|---|---|---|---|---|
| N 3989078 | E 318163 | NAD83 | 3200 | 18 |
BE-110 Hope Plantation Strat Hole
Geologic Time chart (Modified from John R. Stacy, USGS)
Aquifers and confining units
Aquifer definitions based strictly on lithology (no geophysics at this point)
| Depth (in feet) | |||
| 0 | - | 1 | top soil |
| 1 | - | 28 | Surficial Aquifer |
| 28 | - | 91 | Yorktown Confining Unit |
| 91 | - | 95 | Yorktown Aquifer |
| 95 | - | 121 | Beaufort Aquifer |
| 121 | - | 160 | Black Creek Confining Unit |
| 160 | - | 188.4 | Black Creek Aquifer |
| 188.4 | - | 208 | Upper Cape Fear Confining Unit |
| 208 | - | 329 | Upper Cape Fear Aquifer A. 208 - 224 B. 240-250 C. 261-276 D. 315-329 |
| 329 | - | 443 | Lower Cape Fear Confining Unit |
| 443 | - | 472 | Lower Cape Fear Aquifer |
| 472 | - | 759 | "Potomac Group Confining Unit" |
| 759 | - | 847.5 | "Upper Potomac Group Aquifer" |
| 847.5 | - | 866 | "Lower Potomac Group Confinging Unit" |
| 866 | - | 891 | "Lower Potomac Group Aquifer" |
| 891 | - | 1026 | "Potomac Group silts and clays" |
| 1026 | - | 1094.5 | Triassic Basin rock |
Geologic Formations
Geologic determinations are preliminary and subject to change.
This is provisional data has not been reviewed.
| Depth (in feet) | Formation by age | Remarks | ||
| 0 | - | 1.3 | Topsoil | |
| 1.3 | - | 28 | Ladson Fm. (Charleston SC - Nomenclature) | Non-marine section |
| 28 | - | 42.3 | Chowan River Fm. | |
| 42.3 | - | 94.9 | Yorktown Fm. | (Morgarts Beach Member) |
| 94.6 | - | 114 | Beaufort Fm | Unconformity |
| 114 | - | 121 | unnamed cretaceous unit | Zone CC23 |
| 121 | - | 188 | Tarheel Formation | |
| 188 | - | 572 | Cape Fear Formation | |
| 572 | - | 757 | Marine Cenomanian | |
| 757 | - | 1026 | Potomac Group | |
| 1026 | - | 1094.5 | Chatham Group of Newark Supergroup | Triassic |
Geophysics
On March 12th and April 18th, after the borehole had reached a depth of 40 feet, a geophysical log was collected in the open hole prior to the installation of the surface casing. A natural gamma log was collected using a Century Geophysical Corporation model 8043A induction tool. The hole was logged twice, both in the up and down direction. The hole was logged again after the drilling had reached basement.
| Raw LAS Files from 0 to 40 ft* 3/12/04 |
Down, open hole 47K Up, open hole 47K |
| Raw LAS Files from 0 to 1090 ft* 4/18/04 |
Down, open hole 47K |
* These logs are provisional; they have not been reviewed and are subject to both review and revision.
Nannofossils
Calcareous nannofossils are the fossilized remains of single-celled, golden brown marine algae. A single cell (coccolithophore) can be covered by as many as 30 small calcareous plates, which form a protective shell, and is called a coccosphere. Each small plate can range from 3 to 20 microns in size. It is rare to find intact coccospheres; usually micropaleontologists examine and study only single plates.
Zone CC19 is an absence zone defined by the absence of specific nannofossils
The base of Zone CC23 is defined by the last occurrence of the calcareous nannofossil Reinhardtites anthophorous (a type of golden brown fossil marine algae nannofossil) and by the co-occurrence of Reinhardtites levis and Quadrum trifidum.
