Erosion-rate determination from foreland basin geometry

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The geometry of foreland basins is controlled by a dynamic balance between thrust-belt migration, flexural subsidence, and fluvial deposition. To improve our ability to quantify the relationships between tectonics, climate, and foreland basin geometry, I developed analytic solutions for basin topography and stratigraphy using a classic two-dimensional mathematical model of foreland basin evolution. Model predictions for basin topography are successfully tested against observed profiles along a humid-to-arid climatic gradient in the central Andes. Using published estimates for the thrust-belt migration rate, flexural parameter, and thrust-front basin depth in this region, I show that basin topographic proffies can be used to estimate the upstream erosion rate at any point along a foreland basin. Basin-averaged erosion rates estimated in this way vary from 0.025 to 0.045 mm/yr in the central Andes, increasing from semiarid to humid climates.

Original languageEnglish (US)
Pages (from-to)5-8
Number of pages4
JournalGeology
Volume35
Issue number1
DOIs
StatePublished - Jan 2007

Fingerprint

foreland basin
erosion rate
geometry
basin
thrust
topography
climate
basin evolution
subsidence
stratigraphy
tectonics
prediction

Keywords

  • Diffusion
  • Flexure
  • Foreland basin
  • Modeling

ASJC Scopus subject areas

  • Geology

Cite this

Erosion-rate determination from foreland basin geometry. / Pelletier, Jon.

In: Geology, Vol. 35, No. 1, 01.2007, p. 5-8.

Research output: Contribution to journalArticle

@article{ba0e600eabf047e8a35f2460b48b9fac,
title = "Erosion-rate determination from foreland basin geometry",
abstract = "The geometry of foreland basins is controlled by a dynamic balance between thrust-belt migration, flexural subsidence, and fluvial deposition. To improve our ability to quantify the relationships between tectonics, climate, and foreland basin geometry, I developed analytic solutions for basin topography and stratigraphy using a classic two-dimensional mathematical model of foreland basin evolution. Model predictions for basin topography are successfully tested against observed profiles along a humid-to-arid climatic gradient in the central Andes. Using published estimates for the thrust-belt migration rate, flexural parameter, and thrust-front basin depth in this region, I show that basin topographic proffies can be used to estimate the upstream erosion rate at any point along a foreland basin. Basin-averaged erosion rates estimated in this way vary from 0.025 to 0.045 mm/yr in the central Andes, increasing from semiarid to humid climates.",
keywords = "Diffusion, Flexure, Foreland basin, Modeling",
author = "Jon Pelletier",
year = "2007",
month = "1",
doi = "10.1130/G22651A.1",
language = "English (US)",
volume = "35",
pages = "5--8",
journal = "Geology",
issn = "0091-7613",
publisher = "Geological Society of America",
number = "1",

}

TY - JOUR

T1 - Erosion-rate determination from foreland basin geometry

AU - Pelletier, Jon

PY - 2007/1

Y1 - 2007/1

N2 - The geometry of foreland basins is controlled by a dynamic balance between thrust-belt migration, flexural subsidence, and fluvial deposition. To improve our ability to quantify the relationships between tectonics, climate, and foreland basin geometry, I developed analytic solutions for basin topography and stratigraphy using a classic two-dimensional mathematical model of foreland basin evolution. Model predictions for basin topography are successfully tested against observed profiles along a humid-to-arid climatic gradient in the central Andes. Using published estimates for the thrust-belt migration rate, flexural parameter, and thrust-front basin depth in this region, I show that basin topographic proffies can be used to estimate the upstream erosion rate at any point along a foreland basin. Basin-averaged erosion rates estimated in this way vary from 0.025 to 0.045 mm/yr in the central Andes, increasing from semiarid to humid climates.

AB - The geometry of foreland basins is controlled by a dynamic balance between thrust-belt migration, flexural subsidence, and fluvial deposition. To improve our ability to quantify the relationships between tectonics, climate, and foreland basin geometry, I developed analytic solutions for basin topography and stratigraphy using a classic two-dimensional mathematical model of foreland basin evolution. Model predictions for basin topography are successfully tested against observed profiles along a humid-to-arid climatic gradient in the central Andes. Using published estimates for the thrust-belt migration rate, flexural parameter, and thrust-front basin depth in this region, I show that basin topographic proffies can be used to estimate the upstream erosion rate at any point along a foreland basin. Basin-averaged erosion rates estimated in this way vary from 0.025 to 0.045 mm/yr in the central Andes, increasing from semiarid to humid climates.

KW - Diffusion

KW - Flexure

KW - Foreland basin

KW - Modeling

UR - http://www.scopus.com/inward/record.url?scp=33846363289&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33846363289&partnerID=8YFLogxK

U2 - 10.1130/G22651A.1

DO - 10.1130/G22651A.1

M3 - Article

AN - SCOPUS:33846363289

VL - 35

SP - 5

EP - 8

JO - Geology

JF - Geology

SN - 0091-7613

IS - 1

ER -