MIDDLE HAMILTON GROUP STRATA (LOWER GIVETIAN) OF THE EASTERN OUTCROP BELT IN NEW YORK STATE
Challenges to correlating with the standard Hamilton succession in central/western NYS include: 1) overall less abundant and complete exposure; 2) preservation of varied lateral facies changes over short distances; 3) a thicker package of sediments, with less vertical heterogeneity and more gradational facies changes within the vertical succession; 4) anomalous faunas (e.g., the brachiopods Schizophoria and Orthospirifer), and; 5) lack of clear biostratigraphic data. Additional significant problems are the homogeneity of nearshore facies and little recognition of distinct, traceable marker units. Furthermore, very few workers have carried out stratigraphic and paleontologic studies within this region within the last 150 years, as opposed to the myriad of studies carried out in west/central NYS on age-equivalent strata. All of these factors result in a paucity of knowledge about this broad area. This report summarizes our current understanding of the strata of this region and proposes several possible lines of correlation to western strata in an attempt to establish a preliminary stratigraphic framework.