Field Trip itinerary:

March 14^th (Friday)

6:30p, Oshkosh, all gear brought to Harrington Hall, have gear organized and ready to load in vans

March 15^th (Saturday)

7:00 am , Oshkosh, load vans and depart promptly for KS

Evening camp at Clinton Lake State Park, Lawrence, KS

March 16^th (Sunday)

Morning meet with University of Kansas Geologists and study Kansas cyclothems near Clinton Lake. Drive to Arbuckle Mountains, Oklahoma.

Grocery shopping in Sulphur

Evening camp at Chickasaw National Recreation Center, Sulphur OK

March 17^th (Monday)

Stop 17-1a: Scenic turnout on I-35, 6.5 mi. south of Turner Falls exit. Location on northern limb of Arbuckle Anticline. Discussion of structure, tectonics and general stratigraphy of Arbuckle Mountains.

Stop 17-1b: Road cuts on I-35 ~0.5 mi. north of previous stop, Llcated in “graben” north of Chapman Fault. Examine steep to overturned Arbuckle Group limestones (Lower Ordovician), fault (karst?) breccias, and angular unconformity overlain by Collins Ranch Conglomerate (Pennsylvanian, Virgillian). Discuss Pennsylvanian syn-orogenic conglomerates.

Stop 17-2: East Timbered Hills, Ranch roads east of Hwy-77, 1.7 mi. south of Turner Falls. The Timbered Hills, having the highest relief in the Arbuckles, are held up by basement rocks of the Colbert Rhyolite (Cambrian). Examine Rhyolite, and diabase dikes (bimodal syn-rift volcanism), Examine Reagan Sandstone (Cambrian) representing initial transgression of seas into Southern Oklahoma Aulacogen. Examine and sample Arbuckle Group limestones.

Stop 17-3: Turner falls. Examine Arbuckle Group limestones with spectacular array of textures and sedimentary structures. Practice learning carbonate rock types and carbonate sedimentary structures. Discussions of environments and cyclicity. Ordovician karst features in the Arbuckle Group? Examine Turner Falls travertine and tufa. Discuss Pleistocene to recent evolution of the falls. Lunch.

Stop 17-4: Scenic turnout on I-35 ~3.5 mi south of Turner Falls. Overview of south flank of Arbuckle anticline. Tombstone topography: surface expression of Arbuckle Group. Drive south into Ardmore Basin, return to Arbuckle Mtns. on northbound lanes of I-35.

Stop 17-5: The “Long Walk.” Park vans in turnout on E. side northbound lane. At this stop we will hike over 2 miles along the highway and traverse continuous exposures of the Ordovician through Mississippian strata on the south flank of the Arbuckle Anticline. Section measuring exercises. Pace measure major stratigraphic units (group level) and use Jacob staff to measure detailed sections in Arbuckle and Simpson groups. We will “stop” to discuss observations and interpretations as we describe each group in the stratigraphy. At the end we will compile our data, interpret changes in depositional environment, discuss tectonic and sea-level mechanisms, and make facies and thickness comparisons to familiar E. Paleozoic strata of Wisconsin.

Evening camp at Chickasaw National Recreation Center, Sulphur OK

March 18^th (Tuesday)

Morning break camp.

Stop 18-1: Hunton Quarry, south of Lake of the Arbuckles. Located on northwest nose of Tishomingo anticline. Mapping exercise, Examination of Hunton Group (Silurian-Devonian) and Woodford Shale (Devonian).

Stop 18-2: Granite quarry at Ten Acre Rock, east of Troy. Located at crest of Tishomingo Anticline. Examination of Tishomingo Granite; Precambrian basement of craton (outside of Oklahoma Aulacogen).

Stop 18-3: Pennsylvanian Glass Sand Quarry, Mills Creek. Lithology and sedimentary structures of Oil Creek Sandstone (Simpson Group, Lower Ordovician). Mining operations.

Stop 18-4: Buckhorn Asphalt pits, southeast of Lake of the Arbuckles. Located in Mill Creek Graben. Examination of syn-orogenic conglomerates of the Deese Group (Pennsylvanian, Desmoinsean) and Vanoss Group (Pennsylvanian, Virgilian). Discussion of structural and tectonic relationships. Examination of Buckhorn Asphalt, an ancient oil seep, and enclosed aragonite fossils. World’s oldest fossils preserved as aragonite.

Stop 18-5: Sandy Creek west of Sulphur, Mill Creek Graben. Examine exposures of Vanoss Conglomerate (Pennsylvanian, Virgilian). Determine composition and discuss provenance and significance for history of unroofing of Arbuckle Mountains.

Head south on I-35 across Arbuckle Anticline and toward Ardmore Basin.

Stop 18-6: I-35 pull out, Overview of Ardmore Basin and discussion of history.

Grocery shopping in Ardmore.

Camp at Lake Murray State Park, OK.

March 19^th (Wednesday).

Break camp.

Stop 19-1: Tucker Tower Nature Center, Lake Murray State Park. Visit geology exhibits. Examine Devils Kitchen Conglomerate (Pennsylvanian)

Stop 19-2: Lake Murray Spillway, Devils Kitchen Conglomerate (Pennsylvanian).

Drive ~100 miles northeast through Atoka and Kiowa to Ouachita mountains.

Stop 19-3: Pittsburg-Ti locality, frontal Ouachita Mountains, north of Ti Valley Fault. Classic exposures of Atoka Fm. (Pennsylvanian, Atokan). Turbidites. Complete Bouma sequences.

Stop 19-4: Hairpin Turn Locality, Hwy 1-2 Winding Stair Mountains, east of Talihina. Frontal Ouachitas, north of Winding Stair Fault. Examination of Caney Shale (Mississippian), Johns Valley Shale (Pennsylvanian, Morrowan), Atoka Fm. (Pennsylvanian, Atokan). Deep pelagic shales, turbidites, and olistholiths. Discussion on tectonic evolution of Ouachitas, depositional environments, provenance, depositional mechanism of olistoliths, and problems of mapping interpretations.

Stop 19-5: Talihina. Best sole markings you ever saw as building stone! Grocery shopping.

Stop 19-6 (time permitting): Lake Carl Albert spillway north of Talimena. Stanley Shale (Mississippian).

Stop 19-7 (time permitting): Atoka Fm at crest of Winding Stair Mountain, north of Talimena. Near the “source” of the Talimena building stones?

Camp at Talimena State Park, OK, at crest of Winding Stair Mountains.

March 20^th (Thursday).

Morning break camp.

Morning: Talimena Skyline Drive; scenic drive along crest of Winding Stair Mountains, east toward Arkansas border. Overview stops and discussions of structure and tectonics of Ouachita Mountains and Arkoma Basin.

Stop 20-1: Hartshorn Fm.(Pennsylvanian, Desmoinsean), roadcuts north of Hodgen on hwy 270 north of Ouachita thrust front. Deltaic sandstones, siltstones, shales, and coals, plant fossils, upright tree trunks. Outcrop sketch and/or section measuring exercise. Discussion of observations and depositional environments in the Arkoma Basin.

Stop 20-2: Heavener Runestone State Park., east of Heavener, OK. Runestone, tourist attraction, and natural exposures of the Hartshorn Fm. Lunch.

Stop 20-3: Roadcuts near Oklahoma correctional institute, Hwy 270 north of Stapp. Frontal Ouachitas. Johns Valley Fm. (Pennsylvanian, Morrowan).

Stop 20-4: Hwy 270/259 Jct. Locality, Frontal Ouachitas. Evidence of turbidite fan lobes?

Drive south on 259 into Central Ouachita Mountains.

Stop 20-5: Hairpin Turn, Hwy 270 at foot of Kiamichi Mountain. Stanley Shale (Mississippian) and Jackfork Group (Pennsylvanian, Morrowan), exposed on north flank of Lynn Mountain Syncline. Examination of facies and discussions of central Ouachitas structure and relationship of folds to topography.

Drive south into Broken Bow Uplift (complexly folded and weakly metamorphosed core)

Stop 20-6: Roadcuts hwy 259 south of Bethel. Stanly Shale (Mississippian) with complex disharmonic folds and thrust faults. Vitric tuffs in the Stanley Shale. Structure interpretations and tectonic implications.

Stop 20-7: Roadcuts hwy 259, west of Broken Bow Lake. Complexly folded Blaylock Sandstone (Silurian) and Arkansas Novaculite (Devonian).

Camp at Beavers Bend State Park, OK

March 21^th (Friday)

Break camp.

Morning Search for good exposures of Arkansas Novaculite and quartz veins in park.

Exotic minerals day: Stop 21-1 Crater of Diamonds State Park, Murfeesborough, Arkansas; Stop 21-2 Magnet Cove, Arkansas; and possible quartz crystal locality.

Drive through Little Rock (civilized dinner at restaurant?) and drive toward Fayetteville via hwy 40 and 71. Camp at Devil’s Den state park.

March 22^th (Saturday)

Drive north through Ozarks to MO, HWY 71 to Kansas City. hotel in KC.

March 23^st (Sunday)

One group (all?) attends North Central Section of Geological Society of America in KC (3-23 to 3-25) Another group returns home to Oshkosh.