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| USGS Coastal Carolina Project 2005 - Cove City |
Drilling completed 3/20/2006.
Monday, 20-Mar-2006 08:57:40 EST
The drill rig left Reston, VA, on Saturday, 4/23/2005; on-site drilling began Monday, 4/25/2005 and was completed 5/10/2005.
The February 2006 supplemental drilling session is to define the lower stratigraphic units at this location and to date the stratigraphic units using the fossil record, and to determine the thickness of the aquifers.
| Day | Date | Activity | Photos (1) | Run (2) | Total Depth (in ft.) |
Aquifer (3) | Geologic Unit (4) |
|---|---|---|---|---|---|---|---|
| These data are provisional, have not been reviewed, and are subject to change. | |||||||
| 1 | 4/23/05 Saturday |
Drill rig and core recovery specialists depart from Reston | |||||
| 2 | 4/24/05 Sunday |
Site spudded in |  Ready to drill |
Surficial Aquifer | |||
| 3 | 4/25/05 Monday |
Drilling begins Windy conditions |
 Ready to core |
11 | 68 | Pungo River Aquifer | Castle Hayne Formation |
| 4 | 4/26/05 Tuesday |
Drilling in the wind. Through the Mosely Creek Formation at 143 feet; we are into the Jericho Run and have a prominent gravel bed at the contact. |  Washing core sample |
25 | 160 | Castle Hayne Aquifer | K-T Boundary |
| 5 | 4/27/05 Wednesday |
Geophysically logged (gamma, resistivity, 1664, water, temperature) the hole from 0 to 100 feet. Ream the hole to 60 feet and set casing. |  Drilling |
26 | 165 | Castle Hayne Aquifer | Pee Dee Formation |
| 6 | 4/28/05 Thursday |
Cement grouted the casing to 65 feet | 26 | 165 | Castle Hayne Aquifer | Pee Dee Formation | |
| 7 | 4/29/05 Friday |
Drilling continues. Top of Pee Dee aquifer at 170 feet. Pee Dee Formation from 166 feet to 192 feet. | 34 | 220 | Pee Dee Aquifer | Bladen Formation | |
| 8 | 4/30/05 Saturday |
Blustery day. Formation break at 375 feet. | 46 | 300 | Caddin (?) | ||
| 9 | 5/1/05 Sunday |
Cool and raining. Top of aquifer at 428 feet. | 57 | 400 | Caddin (?) | ||
| 10 | 5/2/05 Monday |
Drilling. Top of confining unit at 481 feet. Top of aquifer at 500 feet. | 66 | 450 | Black Creek Aquifer | Shephards Grove (?) | |
| 11 | 5/3/05 Tuesday |
Reached another sand layer | 76 | 520 | Upper Cape Fear Aquifer | Shephards Grove (?) | |
| 12 | 5/4/05 Wednesday |
Bright and sunny. Upper Cape Fear Confining Unit at 563 feet. |  Examining core |
84 | 580 | Tuscaloosa (after LeGrand) | |
| 13 | 5/5/05 Thursday |
grey and overcast; too dark in afternoon to take photographs of core | 92 | 630 | Tuscaloosa (after LeGrand) | ||
| 14 | 5/6/05 Friday |
Rain - conditioned hole - weather too wet and blustery | 93 | 640 | Tuscaloosa (after LeGrand) | ||
| 15 | 5/7/05 Saturday |
Cool AM, nice in afternoon. Top of the Upper Cape Fear reached at 661 feet |  Paleosol |
102 | 710 | Tuscaloosa (after LeGrand) | |
| 16 | 5/8/05 Sunday |
Drilling; beautiful day | 109 | 750 | Tuscaloosa (after LeGrand) | ||
| 17 | 5/9/05 Monday |
Drilling | 116 | 810 | Tuscaloosa (after LeGrand) | ||
| 18 | 5/10/05 Tuesday |
Drilling completed. Top of the Lower Cape Fear reached at 860 feet. Bottom of the channel contains burgandy paleosols. | 123 | 870 | |||
| 19 | 5/11/05 Wednesday |
Logging. A complete suite of borehole geophysical logs were collected. Sweeps were made through runs and in the open hole. | |||||
| 20 | 5/12/05 Thursday |
Heather Hanna and Beth Wrege photographed all core in the field | |||||
1 The complete set of drilling photos are available on the 2005 Cove City Photos Page.
2 Run indicates the cumulative number of runs completed at the end of each day; a run represents the number of times the core barrel has retrieved a core sample.
3 Aquifer indicates the deepest aquifer/confining unit reached during the day's drilling; aquifer names are provisional, subject to approval.
4 Geologic Unit indicates the deepest geologic unit reached in the day's drilling; these geologic names are provisional and have not yet been reviewed for conformity with the North American Stratigraphic Code.
5 LeGrand, H.E., 1960, Geology and ground-water resources of Wilmington-New Bern area: North Carolina Department of Water Resources, Division of Ground Water, Ground-Water Bulletin No. 1, 80 p.
| Day | Date | Activity | Photos (1) | Run (2) | Total Depth (in ft.) |
Aquifer (3) | Geologic Unit (4) |
|---|---|---|---|---|---|---|---|
| These data are provisional, have not been reviewed, and are subject to change. | |||||||
| 1 | 2/26/06 Sunday |
Drill rig and core recovery specialists depart from Reston and arrive in Cove City. The steel is on the ground. | |||||
| 2 | 2/27/06 Monday |
The drill rig is on site. Removed secure cap from the existing well. |
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| 3 | 2/28/06 Tuesday |
Reoccupied hole and began recovery. |  David and fence |
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| 4 | 3/1/06 Wednesday |
Drilling proceeding nicely |  Ellen and tent |
310 | |||
| 5 | 3/2/06 Thurday |
410 | |||||
| 6 | 3/3/06 Friday |
Triconing the hole |  Tricone entering hole |
400 | |||
| 9 | 3/6/06 Monday |
reaming of hole proceeded very slowly | 779.3 | ||||
| 10 | 3/7/06 Tueday |
triconing with 3 and 7/8 bit complete - will resume coring tomorrow weather cool but sunny |
849.3 | ||||
| 12 | 3/9/06 Thursday |
Finally drilling new hole - bottom of hole 880 ft. Drilling is slow but sure |
 Core from 880 feet |
880 | |||
| 13 | 3/10/06 Friday |
Coring proceeded nicely - bottom of hole 920 ft Rainy and cool |
 Core from 910 feet |
920 | |||
| 15 | 3/12/06 Sunday |
Coring slowly but surely - bottom of hole 988.5 ft Out of cape fear unit; in marine or marginal marine Weather warm but not much sun |
988.5 | ||||
| 16 | 3/13/06 Monday |
Pulled string of rods to clean out core barrel today Bottom of hole 1005 ft |
 Core in barrel |
1005 | |||
| 17 | 3/14/06 Tueday |
Drilling slow but sure Weather - rain then sun |
 Cataloging samples |
1035 | |||
| 18 | 3/15/06 Wednesday |
reached bedrock beginning geophysics |
 Bedrock |
1060 | |||
| 19 | 3/16/06 Thursday |
Geophyiscals done inside rods | |||||
| 20 | 3/17/06 Friday |
Replaced rods to core one more | |||||
| 21 | 3/18/06 Saturday |
Cored 6 more feet |  Core from 1066 feet |
1066 | |||
| 22 | 3/19/06 Sunday |
Hole abandonment and site reclamation | |||||
| 23 | 3/20/06 Monday |
Site reclamation Core recovery specialists return to Reston |
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| 24 | 3/21/06 Tuesday |
Site done | |||||
1 The complete set of drilling photos are available on the Cove City Photos Page.
2 Run indicates the cumulative number of runs completed at the end of each day; a run represents the number of times the core barrel has retrieved a core sample.
3 Aquifer indicates the deepest aquifer/confining unit reached during the day's drilling; aquifer names are provisional, subject to approval.
4 Geologic Unit indicates the deepest geologic unit reached in the day's drilling; these geologic names are provisional and have not yet been reviewed for conformity with the North American Stratigraphic Code.
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