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Map showing publication footprint
  • Usage in publication:
    • Halawaka Schist
  • Modifications:
    • First used
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Sears, J.W., Cook, R.B., Gilbert, O.E., Jr., and and others, 1981, Stratigraphy and structure of the Pine Mountain window in Georgia and Alabama, IN Wigley, P.B., ed., Latest thinking on the stratigraphy of selected areas in Georgia; Volume 1: Georgia Geologic Survey Information Circular, no. 54-A, p. 41-53.


Summary:

Name apparently attributed to unpublished report by Bentley, Neathery, and Scott on Lee Co., east-central AL. In AL, Pine Mountain Group consists of Hollis Quartzite, Chewacla Marble and schist, Manchester Formation, and, in authors' opinion, Halawaka Schist. Appears to be same unit as Sparks Schist in GA. Included with Pine Mountain Group instead of with Wacoochee Group (as shown in unpublished Lee Co. report) because of detailed mapping and geochronological investigations by other workers. Felsic gneisses, "granites", and augen gneisses and charnockites generally assigned to Wacoochee Group in Pine Mountain window represent a variably retrograded and deformed granulite-facies basement complex of Grenville age; basement complex now includes Jeff Davis "Granite, charnockite series rocks, Woodland Gneiss, Cunningham "Granite," Wacoochee Gneiss, and Whatley Mill Gneiss. Basement is unconformably overlain by younger, stratigraphically coherent metasedimentary rocks of Pine Mountain Group. This interpretation requires that aluminous Halawaka Schist, previously included with Wacoochee rocks in AL by Bentley, Neathery, and Scott (unpub. report on Lee Co.), be assigned to Pine Mountain Group. For simplicity, Halawaka should be dropped in favor of the term Sparks Schist for use in Pine Mountain Group [name is not abandoned here].

Source: GNU records (USGS DDS-6; Reston GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Halawaka Schist
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Raymond, D.E., Osborne, W.E., Copeland, C.W., and Neathery, T.L., 1988, Alabama stratigraphy: Geological Survey of Alabama Circular, no. 140, 97 p.


Summary:

Used as Halawaka Schist of Wacoochee Complex. Type locality given as exposures along Salem-Halawaka Rd through secs. 13, 24, and 26 of T19N, R28E, Lee Co., east-central AL. Typical exposures may also be seen along backwaters of Chattahoochee River, along Little Uchee and Wacoochee Creeks, and in immediate area of Halawaka. Described as an intermixed sequence of feldspathic muscovite-biotite schist and quartz-diorite gneiss and augen gneiss and lenses of muscovite-graphite schist and thin, irregular amphibolite units. Locally includes numerous small, muscovite-rich pegmatites.

Source: GNU records (USGS DDS-6; Reston GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Halawaka Schist*
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Steltenpohl, M.G., and Kunk, M.J., 1993, 40Ar/39Ar thermochronology and Alleghanian development of the southernmost Appalachian Piedmont, Alabama and southwest Georgia: Geological Society of America Bulletin, v. 105, no. 6, p. 819-833.


Summary:

In the Pine Mountain belt (Pine Mountain window), Middle Proterozoic basement rocks are represented by Wacoochee Complex and its components, Whatley Mill Gneiss and Halawaka Schist. Overlying cover sequence is represented by Pine Mountain Group, which consists of (ascending) Hollis Quartzite, Manchester Schist, and Chewacla Marble (Bentley and Neathery, 1970; Sears and others, 1981; and Crickmay, 1952). Report includes geologic sketch map.

Source: GNU records (USGS DDS-6; Reston GNULEX).


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