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!

Art Trafficking-Looting-Vandalism

Site Steward Opportunity Up North - Plan Now!

The Santa Fe National Forest is looking for Archaeological Site Stewards for their area. Their training day is Saturday, March 21, 2020, so if the date and location fit your schedule, get busy now and sign up. They explain in their press release:

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What Can Be Done with Disturbed Sites?

Campfire pit lined with 1000 y.o. wall stones Grafitti  modern Bulldozer tracks at pueblo site 1Archaeologist Lewis Borck, PhD, would answer: quite a lot.

"Disturbance" describes an archaeological site that has been altered by either natural forces (erosion, animal activity, etc.), previous archaeological excavations, or - as is often the case these days - by vandalism or looting as shown in the photos. Dr. Borck explained in an article he wrote for the Fall 2019 issue of American Archaeology (Vol. 23 No. 3 at p. 44) that his research as a preservation archaeologist focuses upon disturbed sites rather than sites that may be more intact. He says, in part,

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Site Preservation 101

A gentle reminder, Dear Reader, ICYMI the first time:

Campfire pit lined with 1000 y.o. wall stonesPlease embiggen this photo by clicking on it. What you see is a recently-built, recently-used fire pit someone erected when they visited an archaeological site located on public land. They pulled stones out of a 1000-year-old pueblo wall to build up their fire ring nice and neat. Baffling, how often this happens around here and around the world, so following are some protips for campers visiting sensitive sites:

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Hear About Elk Ridge at Our Next Meeting

Laumbach 2 Karl Laumbach in actionThe next GCAS monthly meeting will be held just two days from now on Wednesday, September 18, 2019. Everyone is welcome to join us at the Roundup Lodge at 91 Aklin Hill Road in San Lorenzo/Mimbres, New Mexico. Our featured speaker is Karl W. Laumbach, archaeologist and Associate Director of Human Systems Research in Las Cruces. He plans to share details with us about his personal experiences in investigating and preserving a significant Mimbres Valley archaeological site, known today as Elk Ridge. Read some interesting details about Laumbach's talk here, and even more interesting details about Laumbach himself, here.

Our final potluck of the season begins on September 18 at 6:00 PM followed by our GCAS general meeting. Karl Laumbach will present his talk at about 7:00 PM. We'll see you there!

/s/ webmaster [photo on left, via Human Systems Research. Photo on right, by Bob Gamboa]


Space Archaeology: the Coming Thing

Globalexplorer J WolfeArchaeologists' use of satellite imagery, LIDAR, drones, and the like has taken an innovative turn thanks to Sarah Parcak PhD. In 2016 she and her organization launched an online platform, GlobalXplorer°, which uses crowdsourcing methods to analyze satellite images. Volunteers use the platform to help Dr. Parcak and her team identify possible archaeological sites and assess their risks of looting and destruction. DigitalGlobe (Maxar) provides the satellite imagery; National Geographic provides content and collaborative support.

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GCAS August Field Trip Part II - the C-Bar Ranch Site

GCAS examines the wall outlines Are these sherds Style I or Style IIThe second phase of our August 4, 2019, GCAS field trip found us traveling from the Microwave Site to examine the site at C-Bar Ranch. Like the Microwave Site, the C-Bar Ranch Site comprises some Late Period pithouses and the ruins of more recent pueblo rooms. And like Microwave, C-Bar is well known and convenient to locals and so continues to be heavily looted to this day.

Still life with prickly pear and lichen covered bouldersThe approach to the C-Bar site criss-crosses arroyos and passes rock outcrops hosting venerable prickly pear colonies. Abundant lichens on the rocks testify to the clean air which makes for a good, healthy walk (right photo).

Big photo on left up there shows all that that remains of the site's pueblo walls. Scattered by looters and people who either didn't know any better or didn't care.

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GCAS August Field Trip Part I - the Microwave Site

Microwave vista NW Microwave vista to Cooke's Peak Microwave vista ENEThe Microwave Site has no microwave tower. Not that there's anything wrong with that. It once had one.

This site in southwestern New Mexico is very well known to locals who have been camping here - and gathering potsherds and stones from pueblo walls - for many decades.

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Still More DNA News

image from c8.alamy.comThe GCAS prefers to restrict our blog posts to the US Southwest/Northwestern Mexico region on this here website, but we always make an exception for advances in DNA technology. From a Washington Post article dated March 15, 2019:

"One day about 200 years ago, a woman enslaved on a tobacco plantation near Annapolis tossed aside the broken stem of the clay pipe she was smoking in the slave quarters where she lived....the stem bore marks where she had clenched it in her teeth as she worked. But the stem bore something else she could never have imagined: her DNA.

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Field Trip to Indian Wells - Part II

Indian Wells pit house vista 1The March 3, 2019, GCAS field trip to Indian Wells was enlightening on several levels. Chris Overlock's photos gave a good overview of the general terrain and vegetation, and showcased the classic GCAS looking-for-potsherds stoop that we all know and love. Here in Part II, is a second view of the overall terrain of Indian Wells, followed by a brief illustration of what a bulldozed archaeological site looks like for those who may not have ever seen one before.

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Field Trip to Indian Wells

IMG_5382Please welcome today's guest photographer, GCAS's own Chris Overlock. Thank you for sharing your photos, Chris!

Chris was one of 11 humans accompanied by 2 enthusiastic canines on our March 3, 2019, visit to three archaeological sites that comprise Indian Wells in southwestern New Mexico. Two of our group had come all the way from Las Cruces to join the fun. High-clearance vehicles carried us over increasingly rough roads to a point from which we could reach our intended sites on foot. The weather was breezy but otherwise just right for exploration.

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