… evolution, the UNESCO World Heritage Site “Messel Fossil … early to middle Eocene due to
its annually laminated oil-shale … on the isotopic composition of organic matter in the Messel …

… Organic molecules preserved in fossils provide a wealth of new … fossil from 48 Ma Eocene
sediments in the Messel pit, Germany for … of the general mineralogy of the Messel shale. …

… A carbon isotopic investigation of crude oils and the Messel shale was conducted [131]…
organic compounds preserved in sediments because they can represent the isotopic composition …

… Black organic-rich shales are hallmarks of Eocene lacustrine sedimentation. These classic
lacustrine systems include the Messel … The isotopic compositions of all samples are reported …

… nephelinitic precursor of the Messel oil shale was not enough … terrestrial origin of the preserved
sedimentary organic matter. … organic compounds in- and outside the marker horizon are a …

… differences in their carbon isotope compositions. Our results … One sample from the Eocene
Messel shale (2), located near Darmstadt, … The Messel Shale was influence by high activity of …

… A Messel shale sample containing isoprenoidal GDGTs … Branched (non-isoprenoidal) GDGTs
in both the Messel shale and … Their carbon isotopic compositions can reflect more precisely …

… sources of organic matter input during part of the Eocene. … Isotope measurements performed
along the vertical profile from the Mahogany Zone indicate variations in C and O isotopic …

… Messel oil shale and Lake Chala) and surface sediments (Azorean lakes) encompassing
ancient and modern (Eocene … variety of lakes (of volcanic origin and other natural depressions) …

… Several of these shales were deposited in the Eocene, … Isotopic composition was calculated
by integration of the m/z 44, … (1990) for the C29 hopane in the Eocene Messel shale, …