Tyler James Mackey

Assistant Professor

Photo: Tyler James Mackey

2018 Agouron Institute Geobiology Fellow

Education: 
Ph.D. University of California–Davis, 2016
Email: 
tjmackey@unm.edu
Office: 
Northrop Hall Rm 216

Related Website/s

Research Area/s:

Geochemistry/Petrology/Mineralogy,  Sedimentology/Stratigraphy/Paleoclimate/Paleontology

Personal File/s:

Research and Academic Interests:

Sedimentology, geobiology, carbonate geochemistry, diagenesis. My research uses the tools of sedimentology to understand what evidence of microbial communities can enter the rock record, how we recognize these deposits, and what sorts of observations in modern microbial ecosystems can give us useful search patterns to bring back to the rock record. The majority of Earth history is microbial, so these sediments serve as a window to key evolutionary transitions and changes in habitats through time. Current research projects integrate field studies and laboratory analysis to explore microbial habitats of modern ice-covered Antarctic lakes and assess Neoproterozoic (1000–541 million years ago) environments surrounding the expansion of complex life. For more information on these and other areas of work, please visit my Personal Webpage.

Recent Publications:

Matys, ED, Mackey, TJ, Sumner, DY, Hawes, I, Grettenberger, C, Mueller, E, Summons, RE (2019)Bacteriohopanepolyols across environmental gradients in Lake Vanda, Antarctica. Geobiology. 17(3): 308-3019. DOI:10.1111/gbi.12335

Rivera-Hernandez, F, Sumner, DY, Mackey, TJ, Hawes, I, Andersen, DT (2019) In a PICL: The sedimentary deposits and facies of perennially ice-covered lakes. Sedimentology. 66(3): 917-939. DOI:10.1111/sed.12522

Bergmann, KD, Al Balushi, SAK, Mackey, TJ, Grotzinger, JP, Eiler, JM (2018) A 600 million year carbonate clumped isotopic record from Oman. Journal of Sedimentary Research. 88(8): 960-979. DOI:10.2110/jsr.2018.51

Mackey, TJ, Sumner, DY, Hawes, I, Leidman, S, Andersen, DT, Jungblut, AD (2018) Stromatolite records of changing primary productivity in perennially ice-covered Lake Joyce, McMurdo Dry Valleys, Antarctica. Biogeochemistry. 137(1-2): 73-92 DOI:10.1007/s10533-017-0402-1

Mackey, TJ, Sumner, DY, Hawes, I, Jungblut, AD (2017) Morphological signatures of microbial activity across depositional microenvironments of Lake Vanda, Antarctica. Sedimentary Geology. 361: 82-92. DOI:10.1016/j.sedgeo.2017.09.013

Rankin, AH, Pressel, S, Duckett, J, Remington, W, Hawes, I, Sumner, DY, Mackey, TJ, Castendyk, D, Schneider, H, Jungblut, AD (2017) Characterisation of a deep-water moss from the perennially ice-covered Lake Vanda, Antarctica. Polar Biology, 40(10): 2063-2076. DOI:10.1007/s00300-017-2127-y

Mackey, TJ, Sumner, DY, Hawes, I, Jungblut, AD, Lawrence, J, Leidman, S, Allen, B (2017) Increased mud deposition reduces stromatolite complexity. Geology, 45: 663-666. DOI:10.1130/G38890.1

Sumner, DY, Jungblut, AD, Hawes, I, Andersen, DT, Mackey, TJ, Wall, K (2016) Growth of elaborate microbial pinnacles in Lake Vanda, Antarctica. Geobiology, 14(6): 556-574. DOI:10.1111/gbi.12188

Jungblut, AD, Hawes, I, Mackey, TJ, Krusor, M, Doran, P, Sumner, DY, Eisen, J, Hillman, C, Goroncy, A (2016) Microbial mat communities along an oxygen gradient in a perennially ice-covered Antarctic lake. Applied and Environmental Microbiology, 82(2): 620-630. DOI:10.1128/AEM.02699-15

Sumner, DY, Hawes, I, Mackey, TJ, Jungblut, AD, Doran, P (2015) Antarctic microbial mats: A modern analog for Archean lacustrine oxygen oases. Geology, 43: 887-890. DOI:10.1130/G36966.1

Zhang, L, Jungblut, AD, Hawes, I, Andersen, DT, Sumner, DY, Mackey, TJ (2015) Cyanobacterial diversity in benthic mats of the McMurdo Dry Valley lakes, Antarctica. Polar Biology, 38: 1097-1110. DOI:10.1007/s00300-015-1669-0

Mackey, TJ, Sumner, DY, Hawes, I, Jungblut, AD, Andersen, DT, (2015) Growth of modern branched columnar stromatolites in Lake Joyce, Antarctica. Geobiology, 13: 373-390. DOI:10.1111/gbi.12138

Harwood Theisen, C, Sumner, DY, Mackey, TJ, Lim, DS, Brady, AL, Slater, GF (2015) Carbonate fabrics in the modern microbialites of Pavilion Lake: two suites of microfabrics that reflect variation in microbial community morphology, growth habit, and lithification. Geobiology, 13: 357-372. DOI:10.1111/gbi.12134

Hawes, I, Sumner, DY, Andersen, DT, Jungblut, AD, Mackey, TJ (2013) Timescales of growth response of microbial mats to environmental change in an ice-covered Antarctic lake. Biology, 2: 151-176. DOI:10.3390/biology2010151