Outline is Representative of Size and Shape:
Name Details:
Identified By: C. W. Clewlow Jr.
Named For: Surface finds at Black Rock Desert, Nevada
Date Identified: 1968
Type Site:
Identified By: C. W. Clewlow Jr.
Named For: Surface finds at Black Rock Desert, Nevada
Date Identified: 1968
Type Site:
Point Validity:
Valid type
Clewlow was a well-respected anthropologist from the University of California who conducted extensive excavations and surveys within the Great Basin. This type was named in a professional publication and has many professional references. This is considered a valid type.
Clewlow was a well-respected anthropologist from the University of California who conducted extensive excavations and surveys within the Great Basin. This type was named in a professional publication and has many professional references. This is considered a valid type.
Black Rock Concave
Cluster: Plano Lanceolate Cluster Description of Physical Characteristics and Flaking Pattern:
This is a thin un-fluted medium lanceolate point with a flattened cross section. The blade is excurvate with the blade curving in at the tip, becoming parallel about the midsection, and curving back in towards the base. However, there have been examples that the blade remains parallel to the base and does not curve back in. The base is concave. This point is made with pressure flaking to thin and shape the blade and has basal thinning with short basal flakes removed vertically into the hafting area. Light basal grinding may be present. This point has a horizontal to parallel transverse or random flaking pattern.
Size Measurements:
Total Length - 30 to 95 mm, Max. Blade Width - 17 to 32mm, Basal Concavity - 3 to 5 mm, Thickness - 4 to 6 mm
Total Length - 30 to 95 mm, Max. Blade Width - 17 to 32mm, Basal Concavity - 3 to 5 mm, Thickness - 4 to 6 mm
Commonly Utilized Material:
Additional Comments:
The date for this point has been questioned. Many sites have had this point radiocarbon dated to a transitional Paleo period. This date has been supported by Obsidian hydration readings placing this point as a transitional Paleo point. However, Jennings (1986) has placed this point in the concave basal series along with the Humboldt point which places this point in the middle to late Archaic period. At Hogup Cave points classified as Black Rock points were found in the same strata as Humboldt points. However, Justice (2002) points out that there may have been admixture at that site because Desert Side Notch points were found in the same strata. Danger Cave also had Black Rock type points found in the same strata as Humboldt point, Justice (2002) feels that points typed as Black Rock found at Danger Cave do not fit into the typology of Black Rock nor Humboldt and that this site may be bringing confusion to the date of this point.
The date for this point has been questioned. Many sites have had this point radiocarbon dated to a transitional Paleo period. This date has been supported by Obsidian hydration readings placing this point as a transitional Paleo point. However, Jennings (1986) has placed this point in the concave basal series along with the Humboldt point which places this point in the middle to late Archaic period. At Hogup Cave points classified as Black Rock points were found in the same strata as Humboldt points. However, Justice (2002) points out that there may have been admixture at that site because Desert Side Notch points were found in the same strata. Danger Cave also had Black Rock type points found in the same strata as Humboldt point, Justice (2002) feels that points typed as Black Rock found at Danger Cave do not fit into the typology of Black Rock nor Humboldt and that this site may be bringing confusion to the date of this point.
Distribution:
Distribution Comments:
This point is primarily found in the Black Rock Desert, but has been found through-out the Great Basin.
This point is primarily found in the Black Rock Desert, but has been found through-out the Great Basin.
Age / Periods:
Date: 11,000 - 9,000 B.P.
Cultural Period: Transitional Paleo
Glacial Period: Late Pleistocene to Early Holocene
Culture:
Date: 11,000 - 9,000 B.P.
Cultural Period: Transitional Paleo
Glacial Period: Late Pleistocene to Early Holocene
Culture:
Age Details:
This type is part of the Western Pluvial Lakes Tradition.
This type is part of the Western Pluvial Lakes Tradition.
Similar Points:
Clovis, Folsom, Goshen, Humboldt, Meserve, Midland, Owl Cave, Plainview, Tulare Lake
Clovis, Folsom, Goshen, Humboldt, Meserve, Midland, Owl Cave, Plainview, Tulare Lake
Other points in this cluster / Related / Associated Points:
Angostura, Agate Basin, Browns Valley, Hell Gap, Midland, Milnesand, Plainview
Angostura, Agate Basin, Browns Valley, Hell Gap, Midland, Milnesand, Plainview
