Tool for Microscopic Identification

TMI is designed to help both the novice and expert identify lacustrine and marine sedimentary components using microscopy. The tool emphasizes visual reference materials supported by written expert guidance on identification and interpretation.

Smear slides are a simple and powerful tool for the characterization of unconsolidated sediment. Used as a part of visual core description, they provide a tremendous amount of information about past depositional environments, geochemistry and mineralogy, and flora and fauna.

Our original focus was solely on smear slides of minerals and mineraloids as viewed in the polarizing light (petrographic) microscope, but the tool has expanded to include many other things: biological components that may be encountered while analyzing smear slides, macroscopic components typically viewed under a dissecting microscope, and macroscopic images of cores illustrating sedimentary features and coring/drilling artifacts.

There’s also a tool to help you translate sedimentary percentages to standard (yet flexible) names according to the suggested sediment classification of Schnurrenberger et al., 2003.

TMI is an evolving resource and would benefit from your feedback and contributions. Please contact us.

TMI is funded by NSF Geoinformatics (EAR-1226265), NSF Instrumentation and Facilities (EAR-1462297), and a University of Minnesota Interdisciplinary Informatics Seed Grant.

Random Components

GLAD6-BOS04-3C-2H-1_10.9cm_phyto_40x_cp-600.jpg cigarette_ash_10x_cp-600.jpg calcite_ironoxide_40x_opaque_pp-600.jpg
GNP-SWF10-3D-6L-1-W_34.5cm_MtStHelensJ_40x_cp-600.jpg 1A-235Q-3_49cmFeS2framboids-600.jpg diatom_Urosolenia_spore_100xBF_ME-600.jpg
Charophyte_01_xp_AB-600.jpg PD08-1B-7L-1_35.5CM_PP_10X_AMPH-600.jpg vascular-org-600.jpg

Contact Information


116 Church Street NE, Minneapolis, MN 55455

P: 612-626-7889

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