Stephen A. Macko

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Stable isotopes as probes of terrestrial and extraterrestrial biotic and abiotic synthesis of organic matter

Michael H. Engel, Stephen A. Macko, 1998, Optics & Photonics.

Pathways for the asymmetric amplification of protein amino acids in the Murchison meteorite

Michael H. Engel, Stephen A. Macko, S. Macko, 2010, Optical Engineering + Applications.

Amino acids in carbonaceous meteorites: biotic or abiotic?

Michael H. Engel, Stephen A. Macko, Vlad E. Andrus, 2004, SPIE Optics + Photonics.

Stable isotope analysis of amino acid enantiomers in the Murchison meteorite at natural abundance levels

Michael H. Engel, Stephen A. Macko, S. Macko, 1997, Optics & Photonics.

Establishing criteria to assess the possible origin(s) of life elsewhere in our solar system

Michael H. Engel, Stephen A. Macko, S. Macko, 2005, SPIE Optics + Photonics.

Stable isotope evaluation of the origins of amino acids in fossils

Michael H. Engel, Stephen A. Macko, S. Macko, 1986, Nature.

Dependence of phytoplankton carbon isotopic composition on growth rate and [CO2)aq: Theoretical considerations and experimental results

Stephen A. Macko, R. Bidigare, E. Laws, 1995 .

Experience-Based Learning: Enhancing Understanding by Expanding the Limits of the Classroom III Posters

Stephen A. Macko, 2014 .

Carbon isotope composition of individual amino acids in the Murchison meteorite

Stephen A. Macko, Michael H. Engel, J. A. Silter, 1996 .

Isotopic fractionation of nitrogen and carbon in the synthesis of amino acids by microorganisms

Stephen A. Macko, P. E. Hare, S. Macko, 1987 .

Interpretation of nitrogen isotope signatures using the NIFTE model

Herman H. Shugart, Stephen A. Macko, H. Shugart, 1999, Oecologia.

Biogeochemistry of Kalahari sands

Paolo D'Odorico, Stephen A. Macko, Susan Ringrose, 2007 .

The Organic Geochemistry of Carbonaceous Meteorites

Michael H. Engel, Stephen A. Macko, S. Macko, 1993 .

Stable carbon isotope compositions of individual amino acid enantiomers in mollusc shell by GC/C/IRMS

Michael H. Engel, Stephen A. Macko, J. A. Silfer, 1994 .

The effect of hydrothermal processes on the distribution and stereochemistry of amino acids in Recent Antarctic sediments

Michael H. Engel, Stephen A. Macko, J. A. Silfer, 1990 .

The distribution, stereochemistry and stable isotopic composition of amino acid constituents of fossil and modern mollusk shells

Michael H. Engel, Stephen A. Macko, S. Macko, 1988 .

Importance of suspended participates in riverine delivery of bioavailable nitrogen to coastal zones

Stephen A. Macko, S. Joye, S. Macko, 1998 .

Molecular and isotopic characterization of the particulate organic matter from an eutrophic coastal bay in SE Brazil

Stephen A. Macko, S. Macko, A. Wagener, 2009 .

The stereochemistry of amino acids in the Murchison meteorite

Michael H. Engel, Stephen A. Macko, S. Macko, 2001 .

Abundance and stable carbon isotope composition of amino acids in molecular weight fractions of fossil and artificially aged mollusk shells

Michael H. Engel, Stephen A. Macko, S. Macko, 1995 .

The SAFARI 2000 – Kalahari Transect Wet Season Campaign of year 2000

Herman H. Shugart, Robert J. Swap, Stephen A. Macko, 2004 .

Geochemical characterization of high molecular weight material isolated from late cretaceous fossils

D. A. Russell, Michael H. Engel, Stephen A. Macko, 1990 .

Sources of nitrogen in wet deposition to the Chesapeake Bay region

James N. Galloway, Stephen A. Macko, Jennie L. Moody, 1998 .