High-Resolution Sequence Stratigraphy - an Outcrop

Case Study : Panther Tongue Sandstone, Utah

Based on : Hwang I.G. & Heller, P.L. 2002, Anatomy of a transgressive lag: Panther Tongue Sandstone,

Star Point Formation, central Utah. Sedimentology, V.49, p.977-999

In Gul Hwang

CONTENTS

1. Back-ground of Falling Stage Systems Tract

2. The Panther Tongue Sandstone

3 Hi h R l ti S St ti h3. High Resolution Sequence Stratigraphy

4. Transgressive Lag Deposits

Forced Regression in Shoreface

Where is the Sequence Boundary?Where is the Sequence Boundary?

Cretaceous Western Interior Seaway

StratigraphyCastlegate Sandstone

SC

A

K

W

P

St

Mancos Shale

T

Mancos Shale

Location Map & Cross Section

CU

CUFU

TSE & SB4

MICRODELTASB3

CU

U it 1 & 2

Unit 3

Unit 1 & 2

Unit 3

Unit 1 & 2

TSE

SB

Storres Sandstone

C

MFS

U TSEBAY

CU

LAG DEPOSITS

Simple Lag

Dispersed Lag

Oxidized Lag

Local Lag

Lag Deposits in Spring Canyon Section

Lag Deposits in Huntington Creek Section

Lag Deposits in Cottonwood Creek Section

i ib i f iDistribution of Lag Deposits

Local Lag + Simple Lag

Simple Lag + Oxidized Lag

No Lag or Dispersed Lag

Simple Lag

No Lag or Dispersed Lag

g p g

No Lag or Dispersed Lag

TSE

Slot Canyon, Arizona

Eolian Sandstone