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: TBA - watch this space and your newsletters for details as they develop.

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Online Via Zoom: Our November 18, 2020, Featured Speaker, Margaret Berrier

MarglyphWednesday, November 18, 2020, 7:00 PM: GCAS general meeting via Zoom. No business meeting, which means we will begin by welcoming our Featured Speaker, archaeologist Margaret Berrier, who will share with our group "Pisciform Iconography of the Jornada Mogollon," also known as, "Let's Look at Fish: Pisciforms in the Jornada Mogollon Region of Southern New Mexico, Northern Mexico, and West Texas." Margaret points out,

"Numerous examples of fish are depicted on ceramics of the Southwest's ancient Mimbres Culture. These are well illustrated in publications and the Mimbres Pottery Image Digital Database (MimPIDD). However, no significant catalog or publication exists for the Southwest's Jornada Mogollon culture that was partly contemporaneous with the Mimbres. This presentation will include examples of pisciform iconography (fish forms) and their distribution in the Jornada Mogollon area. It also summarizes ethnographic accounts of fish use and interpretation of fish iconography. Included in the presentation will be many examples and comparisons with other archaeological artifacts."

Margaret combines her training in fine and graphic arts, and data management, with her passion for rock art to produce detailed drawings and photographs for rock art studies and presentations. She received the Archaeological Society of New Mexico's Richard A. Bice Award for Archaeological Achievement in recognition of her outstanding contributions to New Mexico archaeology through preservation and documentation of southwestern rock art sites and service to the Doña Ana Archaeological Society, the ASNM Rock Art Council, and the American Rock Art Research Association. Learn more about Margaret's rock art recording and research here.

Please check your email for your Zoom invitation including further details, and join us for this unique and interesting presentation!

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