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!

July's Events
Back to Back to Back Field Trip Reports - Part II: Ponderosa Ranch

Back to Back to Back Field Trip Reports - Part I: Spirit Canyon

The summer months find the GCAS all over the place partaking of events aplenty. Our field trips are no exception; by the close of the first week of July we will have enjoyed a total of three field trips in five weeks.

2019-06-02 CO Spirit Canyon field trip IMG_1067On June 2, 2019, the GCAS's very own Marilyn Markel led our monthly field trip to two sites located near each other. Our first stop was to Spirit Canyon in the upper Mimbres Valley area. Spirit Canyon is a unique rock art site monitored under the New Mexico SiteWatch Program. About a half-mile walk up the canyon trail and carefully avoiding the lush growth of poison ivy, our group encountered a series of red ochre pictographs that reportedly depict either Apache Mountain Spirits, or the Apache ceremonial dancers who represented the Mountain Spirits. [Photo on left by M.Smith; photo on right by Greg Conlin.]

Janet  Chris O  Marilyn M Corn v Deer snare 2One particular pictograph seems open to more interpretations than more common rock art images. This elongated design appears to be superimposed upon an earlier, very faded, pictograph. These two layered images have been described by various people as a corncob, a corn deity, or a human representing a corn deity by wearing a costume that looks like a corncob. Others opine that the pictograph(s) may depict a large net used for snaring game, because below the bottom horizontal line of the net-like design the older, more faded, red pictograph seems to show the four thin legs of a captured deer. Slightly above the bottom of the net-like design, the deer's head appears to be sticking out of the left side of the net. [Both photos by M.Smith; click on photo of pictograph to better view the deer image.]

What are your own interpretations?

/s/ webmaster

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