NEXT MEETING: Wednesday, April 16, 2025, 6:00 PM at 2045 Memory Lane in Silver City, New Mexico. The GCAS's next monthly IN-PERSON ONLY meeting features speaker geoarchaeologist Dave Rachal PhD of Tierra Vieja Consulting in Las Cruces NM. Doors open at 6:00 PM with light refreshments on offer. Socializing and a brief-to-nonexistent business meeting will immediately precede Dave's presentation of: How Did The Seeds Get There? Ruppia cirrhosa Ecology, Depositional Context and Accurate Radiocarbon Dating at White Sands: "The stratigraphic and geomorphic contexts, and ultimately the chronometric determinations, at White Sands Locality-2 (WHSA-2) are topics of controversy that stem from conflicting interpretations of the processes that deposited the Ruppia cirrhosa (Ruppia) seeds within the paleo-Lake Otero footprint site....[O]ur interpretation depicts the shoreline as an unstable, dynamic lake margin to which Ruppia seeds...were transported from deep-water, offshore growth beds during storm events and deposited on the lake shore in seed balls. These unusual aggregates, known to mix seeds of wide-ranging ages, were gradually broken apart by several cycles of wave action and erosion and redeposited in layers....[W]e will delve into both the ecology and the depositional context of Ruppia and discuss why the Ruppia seeds at paleo-Lake Otero are problematic materials for radiocarbon dating." Check out Dave's and Tierra Vieja Consulting's YouTube videos (links are on our Events page) and bring your questions for him!

NEXT FIELD TRIP: Sunday, April 6, through Tuesday, April 8, 2025: Lyman Lake State Park/Springerville/Casa Malpais AZ. Sunday-Monday, explore Lyman Lake's petroglyphs & archaeological site on your own or with a group. On Tuesday 4/8, we have guided tour of Casa Malpais archaeological site. Reservations are required for ONLY the guided tour to the Casa Malpais site but we must give them a final tally no later than March 23, 2025, so please let trip co-leader Torie Grass ([email protected]) or Eduardo Argüello ([email protected]) know to put you on the list. More details available in newsletter and on Events page of this website, and in the blog posts below. As usual for any GCAS field trip, wear sturdy shoes and pack sun protection & water. See you there!

MAREC Progress Report - Phase IV
Ancient Americas - Linky Goodness to Events and Lectures

Mimbreños y Paquiméños: Current Research by Thatcher Rogers

Ramos poly MNM Mimbres serpentGCAS member Thatcher Rogers is currently a PhD student at UNM, a ceramics analyst/archaeologist for the Office of Contract Archeology and Aspen CRM Solutions, and one of the recipients of our Nancy Coinman Grant Awards. He has kindly allowed us to include on our website his recently-published paper, "Mimbreños y Paquiméños: Historicism and the Ancestry of the Casas Grandes Ceramic Tradition."

For those who have not already read Thatcher's research, he expands upon his prior research into connections between the Mimbres and Casas Grandes cultures by assessing certain ceramic forms and designs that might (or might not) suggest a relationship between the Mimbres and Casas Grandes ceramic traditions.  He offers three alternative hypotheses and suggests areas of concentration for future research in order to fill gaps in the evidentiary record.

The ASNM's current annual volume 47 includes Thatcher's research paper at pp. 203-226; or you can read the complete paper now right on this here website. Thatcher has graciously offered to discuss this topic further at a future GCAS monthly meeting, so stay tuned...

Thank you, Thatcher!

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