Paleocene Early

Schmitz B, Ingram SL, Dockery DT III, Aberg G (1997) Testing Sr/ Sr as a paleosalinity indicator on mixed marine, brackish-water and terrestrial vertebrate skeletal apatite in late Paleocene-early Eocene near-coastal sediments, Mississippi. Chem Geol 140 275-287 Schoeninger MJ (1982) Diet and the evolution of modem human form in the Middle East. Am J Phys Anthropol 58 37-52... 

A much younger intrusive event is associated with the BM2 kimberlite, where Early Paleocene (6-fraction U-Pb perovskite weighted average of 63.5 0.7 Ma) hypabyssal kimberlite intruded into Albian and possibly Cenomanian host rocks. This interpretation is supported by... 

Retallack G. J. (1994a) A pedotype approach to Latest Cretaceous and Early Paleocene paleosols in eastern Montana. Geol. Soc. Am. Bull. 106, 1377-1397. 

Os/ Os ratio remains relatively constant for the majority of this time interval, with the notable exception of the Eocene-Oligocene transition itself. During the Paleocene and Eocene (35-65 Ma), it appears that the osmium record exhibits considerably more variability than does the strontium record. Neither record shows clear evidence of systematic change to more or less radiogenic isotope compositions during this early part of the Cenozoic. 

Thomas E. and Shackleton N. J. (1996) The Paleocene-Eocene benthic foraminiferal extinction and stable isotope anomalies. In Correlations of the early Paleogene in Northwest Europe Geological Society Special Publication 101 (eds. R. O. Knox, R. M. Corfield, and R. E. Dunay). Geological Society of Lxtndon, London, pp. 401-411. 

Retallack [2] computed relative acidification for the Brownie Butte boundary bed by using the impact bed as the parent material, and obtained a value of 0.054 meq cm. Since typical late Cretaceous/early Paleocene paleosols have acid consmnption rates of 0.01-0.02 meq cm yr" , this is evidence for enhanced leaching from the boundary bed relative to the impact bed. Because the boundary bed was emplaced -minutes to hours after tlie impact [33] and the bulk of the impact bed (including shocked quartz) was emplaced -hours to days after tlie impact bed, the boundary bed may have experienced somewhat greater acid deposition. This was true only if significant acid deposition occurred in tlie interval between boundary and impact bed emplacement. In the normal atmosphere rainout of acid in the troposphere occurs on timescales of days in the post-impact atmosphere rainout may have occurred soon after the unpack once the atmosphere cooled. Because of the uncertainties in such timescales and the possibility of different parent material compositions for the impact and boundary beds, we do not consider tlie relative acidification of the two beds further. 

The first benthic d O syntheses generated, as well as more recent compilations, show the same longterm patterns. After the Cretaceous-Tertiary (K/T) boundary events, deep-water d O values remained relatively constant for the first 7 million years of the Paleocene (Figure 7A). At 58 Ma, benthic foraminiferal d O values began a decrease over the next 6 My that culminated during the early Eocene... 

During the early to middle Paleocene, deep-water temperatures remained close to 10°C (Figure 7B). The l%o decrease between 58 and 52 Ma translates into a deep-water warming of 4°C, reaching a high of 14°C. This is in sharp contrast to the modern... 

In California, sand is mined from sedimentary sandstone formations of early tertiary age (namely Paleocene deposits south of Mission Viejo, in the Trabuco Canyon area of Orange County) and Eocene deposits near lone in Amador County and Oceanside in San Diego County. These deposits are essentially feldspathic sands containing clays and heavy minerals. In most cases, glass sand on the West Coast is recovered only after beneficiation. Oriskany and St. Peter sandstones remain the two major sources of glass sand in the United States. 

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