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<span class="mpg2-title">'''Welcome to ILSTRAT'''</span>
<span class="mpg2-subtitle">The Online Handbook of Illinois Stratigraphy</span>
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<div class="mpg2-info">'''[[Special:Statistics|{{NUMBEROFARTICLES}}]]''' Articles •   '''[[Special:Statistics|{{NUMBEROFPAGES}}]]''' Pages''' •   [[Special:Statistics|{{NUMBEROFACTIVEUSERS}}]]''' Active users  •   '''{{NUMBEROFEDITS}}''' Edits</div>
<div class="mpg2-credit">[https://ilstratwiki.web.illinois.edu/wiki/File:Figure_M-1B.jpg Image Source]</div>
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|style="height:100px; width:33%; text-align:left;" |Use the links to the right to navigate to the stratigraphic unit you are looking for, or search in several ways.<br>

*You can use the search box in the upper right-hand corner or the one below. You can search for the name of an article, or any term that appears in an article.<br>
*Within any article, you can use CTRL (or CMD) + F and search for a term in that article.<br>
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 type=fulltext
 searchbuttonlabel=Search 
 placeholder=Search ILSTRAT
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In most cases, the geologic information on each page is based on historical unit descriptions from either ISGS Bulletin 94, 95, or 104 (see [[Illinois_Stratigraphy:About|About ILSTRAT]]).  However, this online resource was not designed to be a static receptacle of previously published material.  If you are a member of the geologic community, please consider contacting us to contribute to the efforts to update the contents of ILSTRAT-- either by adding new material like pictures or logs, updating geologic understanding with recent referenced works, or acting as editor/reviewer.  In this way ILSTRAT can become an accurate reflection of current stratigraphic understanding in Illinois, driven by those most familiar with its intricacies.<br>


Please have a look around and enjoy learning about the stratigraphy of Illinois.<br>
If you have any questions, or would like to get a login to contribute to ILSTRAT, please contact us at [mailto:ilstrat@isgs.illinois.edu ilstrat@isgs.illinois.edu]

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[[Search:Phanerozoic|Phanerozoic]]
:[[Search:Cenozoic Erathem|Cenozoic Erathem]]
::[[Search:Quaternary System|Quaternary System]]
:::[[Search:Holocene Series|Holocene Series]]
:::[[Search:Pleistocene Series|Pleistocene Series]]
::[[Search:Tertiary System|Tertiary System]]
:::[[Search:Pliocene Series|Pliocene Series‏‎]]
:::[[Miocene Series]]
:::[[Oligocene Series]]
:::[[Search:Eocene Series|Eocene Series]]
:::[[Search:Paleocene Series|Paleocene Series]]
:[[Search:Mesozoic Erathem|Mesozoic‏ Erathem]]
::[[Search:Cretaceous System|Cretaceous System]]
::[[Jurassic System]]
::[[Triassic System]]
:[[Search:Paleozoic Erathem|Paleozoic Erathem]]
::[[Permian System]]
::[[Carboniferous System]]
:::[[Search:Pennsylvanian Subsystem|Pennsylvanian Subsystem]]
:::[[Search:Mississippian Subsystem|Mississippian Subsystem]]
::[[Search:Devonian System|Devonian System]]
::[[Search:Silurian System|Silurian System]]
::[[Search:Ordovician System‏‎|Ordovician System]] 
::[[Search:Cambrian System|Cambrian System]]
[[Search:Precambrian_Erathem|Precambrian_Erathem‏]]
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<imagemap>
image: Mainpagetime.jpg
rect 287 36 373 54 [[Search:Holocene Series]]
rect 287 54 373 72 [[Search:Pleistocene Series]]
rect 287 72 373 90 [[Search:Pliocene‏‎ Series]]
rect 287 90 373 107 [[Miocene Series]]
rect 287 108 373 125 [[Oligocene Series]]
rect 287 125 373 145 [[Search:Eocene Series]]
rect 287 145 373 162 [[Search:Paleocene Series]]
rect 170 36 287 72 [[Search:Quaternary System]]
rect 170 72 287 162 [[Search:Tertiary System]]
rect 61 36 170 162 [[Search:Cenozoic Erathem]]
rect 61 162 170 242 [[Search:Mesozoic Erathem]]
rect 170 162 373 187 [[Search:Cretaceous System]]
rect 170 188 373 215 [[Jurassic System]]
rect 170 216 373 242 [[Triassic System]]
rect 170 242 373 270 [[Permian System]]
rect 218 269 375 296 [[Search:Pennsylvanian Subsystem]]
rect 61 242 170 432 [[Search:Paleozoic Erathem]]
rect 170 269 217 325 [[Carboniferous System]]
rect 218 297 374 323 [[Search:Mississippian Subsystem]]
rect 170 325 373 351 [[Search:Devonian System]]
rect 170 351 373 379 [[Search:Silurian System]]
rect 170 379 373 405 [[Search:Ordovician System]] 
rect 170 405 372 433 [[Search:Cambrian‏ System]]
rect 8 433 373 529 [[Search:Precambrian_Erathem]]
rect 8 36 61 433 [[Search:Phanerozoic]]
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