My research objectives revolve around the themes of low-temperature geochemistry and sedimentology, the interpretation of natural chemical cycles within the Earth and the application of such processes to the evaluation and remediation of contaminated sediments. Recent research includes the modelling of pore fluid chemistry in subduction zone fluids, and interpretation of rare earth elements in sedimentary rocks from different tectonic environments, including the identification of volcanic events in sedimentary rocks from the Newark Basin (NJ). Recent work on Staten Island includes soil geochemistry at Crooke’s Point, the origin of glacial sediments in Charleston and coastal changes resulting from storms and sea level rise.

I spent several years overseeing the writing, approval and introduction of two new B.S. programs at CSI - a B.S. in Earth and Environmental Science and a B.S. in Earth Science for educators in grades 7 - 12. Currently, I coordinate these programs, along with the Geology minor.


Ph.D., Geology, University College, London, Great Britain

B.Sc. (Hons), Geology, University of Edinburgh, Scotland

Scholarship / Publications

Alexander, J. L., Thatcher, S. T and Rivelli, V. (2018) Geochemical variation in metasedimentary rocks adjacent to the Palisades Sill – metamorphic influence or original sediment composition? GSA Abstracts with Programs, 50 (2), doi: 10.1130/abs/2018NE-311245
Alexander, J. L. (2018) Interpretation of local rocks in the context of regional events in undergraduate student labs. GSA Abstracts with Programs, 50 (2), doi: 10.1130/abs/2018NE-311340

Alexander, J. L., Afonja, R. and Rubin, S. (2016) Modeling Pore fluid chemistry in accretionary wedge sediments - New interpretation of ODP data. GSA Abstracts with Programs, 48 (2), doi: 10.1130/abs/2016NE-272763

Alexander J. L. (2015) Laboratory investigations of online databases to enhance student understanding of energy resources. GSA Abstracts with Programs, 47 (3), 100
Alexander J. L., Thatcher, S. and Rivelli, V. (2015) Geochemistry of sedimentary rocks affected by contact metamorphism from the intrusion of the Palisades Sill. GSA Abstracts with Programs, 47 (3), 134

Alexander J. L., Rivelli, V. and Thatcher, S. (2014) Sedimentary structures in the Lockatong Formation adjacent to the base of the Palisades Sill. GSA Abstracts with Programs, 46 (2), 105
Alexander J. L., Thatcher, S., Rivelli, V. and Bond, V. (2014) Origin and age of fluvial sediments, Charleston, Staten Island. GSA Abstracts with Programs, 46 (2), 45
Alexander J. L., Puffer J. H., Benimoff A. I. (2013) New evidence of volcanic ash in the Lockatong Formation of the Newark Basin. GSA Abstracts with Programs, 45 (1), 127
Alexander J. L. (2013) Environmental Geology lab exercises using local data from Staten Island. GSA Abstracts with Programs, 45 (1), 69
Alexander J. L. (editor) (2012) Field Guide and Proceedings Geological Association of New Jersey Twenty Ninth Annual Meeting
Rollizo A. and Alexander J. L. (2012) Soil survey of Crooke’s Point, Gateway National Recreation Area as a guide for vegetation management. Field Guide and Proceedings Geological Association of New Jersey Twenty Ninth Annual Meeting
Alexander J. L., Alicia, S., Gunderman, D. and Saltos, J. (2012) Groundwater response to unusual weather events – a case study from Staten Island. GSA Abstracts with Programs, 44 (2), 61
Alexander J. L. (2012) Introducing elementary school children to geologic fieldwork – from formulating the hypotheses to analyzing the data. GSA Abstracts with Programs, 44 (2), 45

Valsami-Jones E, Baltatzis E, Bailey E H, Boyce A J, Alexander J L, Magganas A, Anderson L, Waldron S, Ragnarsdottir K V. (2005) The geochemistry of fluids in an active shallow submarine hydrothermal system: Milos island, Hellenic Volcanic Arc. Journal of Volcanology and Geothermal Research, 148, 130-151.

Schrag D P, Adkins J F, McIntyre K, Alexander J L, Hodell D A, Charles C D and McManus J F. (2002) The oxygen isotopic composition of seawater during the Last Glacial Maximum. Quaternary Science Reviews, 21, 331-342.

Alexander J L, Pickering K T and Bailey E H. (1999) Hydrothermal sediments associated with a relict back-arc spreading centre in the Shikoku basin, recovered from the Nankai accretionary prism, Japan. The Island Arc, 8, 281-292.

Alexander J L.  (1998) Rare earth element anomalies in the Nankai Accretionary Prism, Japan. In: Cramp A, MacLeod C J, Lee S V and Jones E J W (eds.) Geological Evolution of Ocean Basins: Results from the Ocean Drilling Program. Geological Society, London, Special Publication, 131, 273-285.

Sims R, Lawless T A, Alexander J L, Bennett D G and Read D.  (1996) Uranium migration through intact sandstone: Effect of pollutant concentration and the reversibility of uptake. Journal of Contaminant Hydrology, 21, 215-228.