Stucco-coated pottery is fairly common in Lower Colorado River valley late
prehistoric-protohistoric sites, and occasionally is found as far east as
the Tucson area. See the following references.
Heidke, James, and Mark D. Elson
1988 Tucson Basin Stucco-Coated Plain Ware: A Technological Assessment.
Kiva 53:273-285.
Waters, Michael R.
1982 The Lowland Patayan Ceramic Tradition. In Hohokam and Patayan:
Prehistory of Southwestern Arizona, edited by Randall H. McGuire and
Michael B. Schiffer, pp. 275-297. Academic Press, New York.
1982 The Lowland Patayan Ceramic Typology. In Hohokam and Patayan:
Prehistory of Southwest Arizona, edited by Randall H. McGuire and Michael
B. Schiffer, pp. 537-570. Academic Press, New York.
Allen Dart, RPA, Executive Director
Old Pueblo Archaeology Center
PO Box 40577
Tucson AZ 85717-0577 USA
520-798-1201 office, 520-798-1966 fax
Email: [log in to unmask]
URL: www.oldpueblo.org
------------------------------------------------------------
On Fri, July 3, 2009 4:21 pm, Ron May wrote:
> Bob,
>
> Thank you for a very interesting explanation for stuccoing a vessel. The
> Native pottery makers in the Peninsular Mountains of Alta and Baja
> California
> do not apply stucco to any vessels, cooking or otherwise. We find the
> stucco coatings on vessels associated with extinct Lake Cahuilla, which
> stood
> from A.D. 900-1600 and could have been present when Hernan de Alarcon
> sailed
> a Spanish ship up the Lower Colorado River. The stucco coated pottery is
> quite rare, based on a collection of 12,000 sherds recovered from around
> the
> lake. Stucco coated pottery is also found at locations along the Lower
> Colorado River, but I am not familiar with the details. Of course, an
> exterior
> stucco could have disintegrated off the residual clay pottery of the
> mountains and there might be some properties of the sedimentary clays
> that
> caused the stucco to survive longer out in the deserts. I greatly
> appreciate
> your comments.
>
> Ron May
> Legacy 106, Inc.
>
>
> In a message dated 7/3/2009 4:01:02 P.M. Pacific Daylight Time,
> [log in to unmask] writes:
>
> Ron,
>
> Roughening of the surface, whether by stuccoing, indenting, brushing or
> any
> other method, increases the amount of surface area available to serve as
> a
> "heat exchanger" ... additionally, a roughened surface causes turbulent
> currents (in the heated air streaming by the exterior) on the surface,
> which
> do not necessarily increase the coefficient of heat transfer (efficiency)
> of
> the surface, but does tend to "regulate" it (slows down abrupt changes in
> temperature) within a more moderate amd predictable range (that is, the
> pot
> is not so sensistive to its alingment over the heat source/fire ...
> consequeently, doing away with hot and cold spots ... that, incidentally
> gives another decided advantage, making the pot less susceptible to
> breakage
> from the shocks of localized hot & cold spots ... "chunky" temper of the
> right kind and size also conferring these advantages).
>
> Consequently, as a general rule (across all cultures that I am familiar
> with
> in Northern America), the cooking pots almost always have roughened (or
> at
> least non-smoothed, non-polished) exterior surfaces.
>
> Bob Skiles
>
>
> ----- Original Message -----
> From: "Ron May" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Friday, July 03, 2009 4:12 PM
> Subject: Re: Temper
>
>
>> In addition to mica to control heat, some potters "stuccoed" the
>> exterior
>> of pots with clay to control heat. I have examined stuccoed pottery,
>> but
>> really do not understand how this helps in heating. Any ideas?
>>
>> Ron May
>> Legacy 106, Inc.
>>
>>
>> In a message dated 7/3/2009 3:14:07 A.M. Pacific Daylight Time,
>> [log in to unmask] writes:
>>
>> Mica could enter the pot as temper (with quartz sand) as micaceous
>> sandstones are not uncommon at least in Europe.
>>
>> I came across an interesting example recently from a kiln in Swansea,
>> S
>> Wales. it produced pots which appear t be late C15/early c16 in date
>> paralleling similar vessels from the Cotswolds (Minety area)
>> suggesting
>> a source for the potter. The Cotswold pots are tempered with oolitic
>> limestone but the Swansea pots appear to have been tempered with an
>> oolitic sand probably from a beach along the nearby Gower peninsula.
>> The
>> pots re unknown from consumer deposits so it looks as if the kiln was
>> short-lived- possibly not much pot being used in this period which
> seems
>> to be dominated by English and Continental imports.
>>
>> paul
>>
>>
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