Green Hornet Prospect, Ketchikan Gateway Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Green Hornet Prospect | Prospect |
| Ketchikan Gateway Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
55° 23' 16'' North , 131° 46' 44'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Ketchikan | 8,197 (2017) | 9.7km |
| Saxman | 417 (2017) | 13.9km |
| Metlakatla | 1,405 (2017) | 31.6km |
Location: This prospect is known only from U.S. Bureau of Mines (1977) claim records. Its approximate location is on northern Gravina Island at an elevation of about 250 feet, 0.3 mile southwest of triangulation point 'Sim' on Tongass Narrows. The site is at the intersection of sections 5, 6, 7, and 8, T. 75 S., R. 90 E., of the Copper River Meridian. It corresponds to loc. 57 in Elliott and others (1978). The location is probably accurate within about 0.2 mile.
Geology: The country rocks on northern Gravina Island are chiefly Upper Jurassic to mid-Cretaceous andesitic and basaltic volcanic rocks that gradationally intertongue with flyschlike sedimentary rocks. The rocks are intruded by at least one pluglike body of Tertiary gabbro (Berg, 1973; Berg and others, 1988). The bedded rocks were regionally metamorphosed to low-greenschist grade in Late Cretaceous time, and subsequently contact metamorphosed to hornblende hornfels near the contact of the Tertiary gabbro. The country rocks are cut by a high-angle fault along Tongass Narrows that displays about 4 miles of right-lateral offset. According to U.S. Bureau of Mines claim records (1977), this prospect, which appears to be in hornfelsed Jurassic or Cretaceous strata near the contact of a Tertiary gabbro plug, reportedly was staked for uranium, or for other radioactive minerals. No other information about it has been made public.
Age: Tertiary?
Commodities (Major) - U?
Development Status: None
List of minerals for each chemical element
Other Databases
| Link to USGS - Alaska: | KC060 |
|---|
Other Regions, Features and Areas containing this locality
North America
- Coast MountainsMountain Range
North America PlateTectonic Plate
- Alexander TerraneVolcanic Arc
- Taku DomainDomain
USA
- Alaska
- Ketchikan Mining DistrictMining District
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