Pap.^No. 22^]' CORALVILLE RESERVOIR — CALDWELL. 93 



Ceramic materials from 13JH2 have been scanty. Oneta materials 

 have been recovered by the former landowner and probably by a 

 University of Iowa field party, but exact data are not available. 



It seems likely that 13JH2 was characterized by a long continuity 

 of occupation, possibly extending from the Archaic to the Oneota 

 horizon. The latter is assuredly very recent, possibly historic in 

 range. Site 13JH205 (below), immediately to the east, is char- 

 acterized by a very scanty artifact assemblage, but suggests, in part, 

 a late Oneota orientation with a temporal range extending into the 

 historic period. 



SITE 13JH3 



As originally described (Ward, 1904, pp. 32-33), site 13JH3 con- 

 sisted of two low mounds situated on the edge of a high bluff over- 

 looking the east bank of the Iowa River. By 1956 only a single 

 structure remained (34 feet diameter, 3 feet high; fig. 12). A recent 

 trench, now substantially filled, cuts through the mound, roughly 

 paralleling the east-west axis. A single hickory tree grows upon 

 the extreme southern boundary of the mounded area; the decayed 

 stump of another occurs directly north, on the opposite periphery. 

 Rising from the mound toward the west is a gently sloping knoll, 

 the plowed surface of which has produced some occupational debris 

 (chipping materials, point fragments). 



Despite the apparent disruption, it was hoped that a test might 

 disclose undisturbed deposits or reveal significant details of construc- 

 tion. A trench, 45 feet in length, was excavated across the body of 

 the structure, oriented to intersect the intrusive pit in a perpendicular 

 manner (pi. 18, a). This trench, based on a series of 5-foot squares 

 (0.5 foot vertical control), was excavated into the subsoil adjacent to 

 and beneath the mound. An effort was also made to delimit the 

 outline of the earlier, intrusive pit. 



STRATIGRAPHY 



Two components are present (fig. 13) : 



A. A basal stratum of densely compacted yellow-brown loessic clay. A white 



chalky stain, probably the leached products of the old soil surface, char- 

 acterizes the upper portions of this stratum in squares 5 and 6. 



B. Superimposed on A is a matrix of closely similar pattern, but markedly less 



compact and with an apparent charcoal content. Recent sod, coextensive 

 with the adjacent field area, forms a cortical surface for the entire fea- 

 ture. Stratiun B is separated from A by a slight unconformity. 



Evidence of a premound humus is lacking; the disconformity sug- 

 gests an old surface from which the sod was removed prior to mound 

 construction. Stratum A is substantially similar to adjacent ero- 

 sional and field exposures. Stratum B is also similar, but suggests 



