Pg. 118. Bishops Lodge member of Tesuque formation of Santa Fe group. Just north of Santa Fe, 50 to 530 feet of light-gray volcanic-derived sandstone and silt, with minor tuff beds, were measured by Kottlowski [see Spiegel and Baldwin, 1963, USGS Water-Supply Paper 1525]. This tuffaceous unit in places rests conformably on as much as 100 feet of pinkish-tan Precambrian-derived sandstone typical of the Tesuque formation, although Cabot (1938) extended Picuris tuff southward to include exposures just north of Santa Fe, Kottlowski is proposing name Bishops Lodge member for following reasons: (1) Bishops Lodge member is interbedded with lower part of Tesuque; (2) Cabot's treatment of Picuris tuff is generalized, whereas study of Santa Fe area is detailed; and (3) exact correlation with type Picuris tuff is not possible at present. [Age is middle Miocene(?).]
Described from Santa Fe region, central NM.

Source: US geologic names lexicon (USGS Bull. 1200, p. 354).

Pg. 64-72. Bishop's Lodge member of Tesuque formation of Santa Fe group. Discussion of playa deposit in Bishops Lodge member of Tesuque. Discovery of marked disconformity at top of playa beds separating them from overlying Tesuque formation, coupled with changes in lithology, mode of sedimentation, and nature of terrain supplying the sediments suggests that Bishops Lodge member and beds underlying it should be separated from Tesuque formation. [Age is middle Miocene(?).]
[Boyer measured two sections in Tesuque quadrangle, Santa Fe Co., central NM: (1) in SE/4 SE/4 sec. 17, T. 18 N., R. 10 E., 40 feet thick; and (2) in SE/4 SE/4 sec. 6, T. 17 N., R. 10 E., 103 feet thick. Base not exposed in either section. Consists of light-gray volcanic-derived sandstone and silt, with minor tuff beds.]

Source: US geologic names lexicon (USGS Bull. 1200, p. 354); supplemental information from GNU records (USGS DDS-6; Denver GNULEX).

Bishop's Lodge revised--Spiegel and Baldwin (1963) assigned Bishop's Lodge as a member of Tesuque Formation, basal formation of Santa Fe Group; Bishop's Lodge is here removed from Tesuque and included in Picuris Tuff of Cabot (1938). Picuris Tuff crops out at widely separated points along the western border of the Sangre de Cristo Mountains north of Santa Fe, in Santa Fe Co, NM in Estancia basin. Gray tuff beds present in an area just west of the Bishop's Lodge-Santa Fe road had been described and mapped as basal part of Tesuque Formation [including Bishop's Lodge Member] by Spiegel and Baldwin (1963). In the present report, however, authors "believe the Bishop's Lodge Member to be a part of the Picuris Tuff of Cabot (1938), and...do not recognize a lithologic counterpart of the Bishop's Lodge Member in the Tesuque Formation. It is clear that the ultimate correlation of the Bishop's Lodge Member will remain for future investigators to decide."

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