| Identifier | 1978-027-FA | ||||||||
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| Purpose | Run seismic lines on and around Jeffreys Ledge to determine the origin and structure of some sediments surrounding Jeffreys Ledge and the structure and origin of the underlying sediments; observe the structure of the Presumpscot Formation flanking the western end of Jeffreys Ledge and determine if the deformation is related to a Late Wisconsin readvance of the continental ice sheet; and locate the offshore extension of the Clinton-Newbury and the Bloody Bluff faults. | ||||||||
| Location | Jeffreys Ledge, Gulf of Maine, Cape Ann, Massachusetts, New Hampshire, United States, North America, North Atlantic; | ||||||||
| Summary | Minisparker data: 250 km. | ||||||||
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| Itinerary |
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| Bounds |
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| Organization |
384 Woods Hole Road
Quissett Campus
Woods Hole, MA02543-1598
(508) 548-8700
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| Principal investigators | Eskenasy, Diane M. | ||||||||
| Crew members |
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| Affiliate staff | USGS-Denver: Wallace Bothner, Andrew Shride and Robert Simpson |
| Data category: | Seismics, Location-Elevation |
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| Data type: | Sparker, Air Gun / Water Gun, Boomer, Bubble Gun, Navigation |
| Name | Description |
|---|---|
| Cruise report | Chief Scientist's daily log of ship movement, equipment and data acquisition notes, and track chart. Includes personnel and equipment list. |
| Sparker log | Sparker log describing equipment configuration, data acquisition notes, ship movement, weather, and other cruise notes. |
| Equipment | Usage description | Data types | Datasets |
|---|---|---|---|
| Del Norte 26 sparker | Sparker | (no data reported) | |
| Del Norte hydrophone | Air Gun / Water Gun, Boomer, Bubble Gun, Sparker | 3 | |
| Loran-C | Navigation | 2 | |
| Raytheon radar | Navigation | (no data reported) |
| Dataset name | Equipment | Description | Dataset contact |
|---|---|---|---|
| 1978-027-FA-SE-001 | Del Norte hydrophone | Collection of paper record displays of seismic data( MSP) for lines | Nancy K. Soderberg |
| 1978-027-FA-SE-001-01 | Del Norte hydrophone | scanned seismic record sections | Nancy K. Soderberg |
| 1978-027-FA-SE-002 | Del Norte hydrophone | microfilm of *SMALL CAN | Nancy K. Soderberg |
| 1978-027-FA-LN-001 | Loran-C | Navigation trackline plot for field activity 78027 | Nancy K. Soderberg |
| 1978-027-FA-LN-001-01 | Loran-C | Cruise track chart including line numbers, days and 15-minute positions. | Nancy K. Soderberg |
