Bulletin of the Texas Archeological Society, Volume 84, 2013 Page: 52
270 p. : ill.View a full description of this periodical.
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Tb (Qpm)Figure 6. Bivariate plot of terbium and samarium showing the separation of the three Group 10 subgroups. Ellipses
represent 90 percent confidence intervals for membership in the group.west central Texas, the Llano Uplift area, and, in some
cases, the Lower Pecos. Most samples are from sites
in the heartland of the Jumano, that is the Concho,
upper Colorado, and San Saba river drainages, and
the vast majority of the samples are Leon Plain. There
are a few Goliad Plain and one Doss Red as well.
Some of the groups are small and occur (in the present
sample) at only one or two sites, whereas others are
larger and occur in more sites over somewhat larger
areas. Then there are the large groups that contain
the bulk of the samples and have larger distributions,
mostly in west central Texas and, in some cases, the
Lower Pecos, and including a very modest number of
samples from Travis, Williamson, and Bell counties,
plus one from Uvalde County.
Group 1
This group has six samples, all bone-tem-
pered with sand. Three of the six are untypedbone-tempered plain from 41MN55, one is Goliad
Plain from 41MN23, and two are Leon Plain from
41VV 1724 (Figure 9). These have been assigned to
three subgroups, 1A, 1B, and 1C.
Group JA
Subgroup 1A contains three untyped bone-
tempered plain samples from 41MN55.These are
presumed to have been made somewhere other than
the site area since a clay sample from 41MN55 is
a member of Group 10 (probability of membership
27.35 percent).
Group 1B
Subgroup 1B contains two Leon Plain samples
from 41VV 1724; the production area is unknown.
Interestingly, all of the other Val Verde County
samples assigned to compositional group are in52 Texas Archeological Society
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Texas Archeological Society. Bulletin of the Texas Archeological Society, Volume 84, 2013, periodical, 2013; Abilene, Texas. (https://texashistory.unt.edu/ark:/67531/metapth1222741/m1/56/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting Texas Archeological Society.