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Trini Mendenhall Community Center, 1414 Wirt Road
Houston, TX 77055

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Third Thursday of each month
Time: 6:30 pm - 8:45 pm

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“The Calf Creek Horizon: A Mid-Holocene Hunter-Gatherer Adaptation in the Central and Southern Plains of North America”

– Dr. Jon Lohse

The Thursday, May 19th meeting of the Houston Archeological Society will feature a presentation by professional archeologist, Dr. Jon Lohse on the Calf Creek cultural horizon. Our plans are to hold this meeting in person at the Trini Mendenhall Community Center at 1414 Wirt Road in Houston beginning at 6:30 p.m. with social hour before the meeting begins at 7:00 p.m. We will also offer this meeting and program to our members via Zoom (members will receive the link via email shortly before the meeting). The program only will also be presented via YouTube livestream starting at 7:15 at this link ps://

Often characterized by distinctive chipped-stone technology, the Calf Creek cultural horizon made its first appearance in the central and southern plains of North America some six thousand years ago. Distributed over a known area of more than 500,000 square miles, it is one of the largest post-Paleoindian archaeological cultural complexes in North America.

One of the most notable aspects of Calf Creek culture is its distinctive, deeply notched bifaces, many of which show evidence of heat-treating. Recent targeted dating suggests that these unique traits, which required exacting knapping and other techniques for production, arose in a relatively narrow window, sometime around 5,950–5,700 calendar years before the present. Given the wide geographical distribution of Calf Creek artifacts, however, researchers surmise that these technological innovations, once adopted, spread fairly quickly throughout the associated cultural groups.

This talk presents some of the highlights and recent lessons from work on the Calf Creek Horizon. The recently published volume (TAMU Press) The Calf Creek Horizon brings together for the first time in a single source fine details of geographic distribution, regional variability, typology, and technological aspects of Calf Creek material culture. This first-ever “big picture” view will inform and direct related research for years to come

Dr. Jon C. Lohse is a Senior Associate with Terracon Consultants, Inc. where he manages a team of natural and cultural resources experts and consultants. He is the Vice President of the Board of Directors for the Gault School for Archaeological Research, and an affiliated researcher in the Anthropology Department at Rice University. He has been a professional practicing archaeologist for what feels like a very long time; he received his MA (1994) and PhD (2001) from UT Austin. He’s a native Houstonian and seventh generation Texan. He lives about a quarter of a mile from this meeting hall with his wife, archaeologist Dr. Molly Morgan Lohse, their two children, and his mother, former HAS member Margie Elliott. His latest publication is the edited volume titled “The Calf Creek Horizon: A Mid-Holocene Hunter-Gatherer Adaptation in the Central and Southern Plains of North America” (Texas A&M University Press, 2021).

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HAS Journal No. 144 is now available. The Journal Number 144 The articles will focus on the San Felipe de Austin Dig by John Lohse, Horseshoes in Texas, a Thimble from the 18th or 19th century from France found in Frosttown, and another article about Camp Kirby in Dickenson, TX, a civil war camp by Charly Gordy, ceramics from Cottonfield by Tim Perttula, and information from Mike Woods about a Butted Knife Found in Comal County. Complimentary copies may be obtained by HAS members at the monthly meetings. Non-HAS members may purchase copies through Go to the HAS Journals Section for a link to the publication on the website. Alternatively, copies may be purchased at the HAS Monthly Meetings.

To learn more about the history behind our archeological society contact