World's Best Scientists 2026 revealed!

D-Index & Metrics

Earth Science

D-Index
46
Citations
15701
World Ranking
4120
National Ranking
1592

Robert G. Loucks publication distribution in Earth Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Earth Science in 2026. The highlighted bar marks where Robert G. Loucks sits on this spectrum.

38–47 publications: 5 scientists 48–57 publications: 33 scientists 58–67 publications: 94 scientists 68–77 publications: 161 scientists 78–87 publications: 278 scientists 88–97 publications: 376 scientists 98–107 publications: 404 scientists 108–117 publications: 484 scientists 118–127 publications: 540 scientists 128–137 publications: 557 scientists 138–147 publications: 491 scientists 148–157 publications: 495 scientists 158–167 publications: 458 scientists 168–177 publications: 490 scientists 178–187 publications: 414 scientists 188–197 publications: 401 scientists 198–207 publications: 333 scientists 208–217 publications: 292 scientists 218–227 publications: 290 scientists 228–237 publications: 262 scientists 238–247 publications: 243 scientists 248–257 publications: 208 scientists 258–267 publications: 185 scientists 268–277 publications: 147 scientists 278–287 publications: 128 scientists 288–297 publications: 119 scientists 298–307 publications: 120 scientists 308–317 publications: 107 scientists 318–327 publications: 93 scientists 328–337 publications: 87 scientists 338–347 publications: 64 scientists 348–357 publications: 87 scientists 358–367 publications: 60 scientists 368–377 publications: 60 scientists 378–387 publications: 34 scientists 388–397 publications: 50 scientists 398–407 publications: 44 scientists 408–417 publications: 31 scientists 418–427 publications: 39 scientists 428–437 publications: 27 scientists 438–447 publications: 36 scientists 448–457 publications: 27 scientists 458–467 publications: 29 scientists 468–477 publications: 30 scientists 478–487 publications: 19 scientists 488–497 publications: 15 scientists 498–507 publications: 18 scientists 508–517 publications: 19 scientists 518–527 publications: 16 scientists 528–537 publications: 10 scientists 538–547 publications: 11 scientists 548–557 publications: 14 scientists 558–567 publications: 11 scientists 568–577 publications: 7 scientists 578–587 publications: 14 scientists 588–597 publications: 5 scientists 598–602 publications: 4 scientists 603+ publications: 100 scientists
38 publications 603+

This scientist: 234 publications — 74th percentile

74% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 603 publications or more.

Robert G. Loucks D-index placement in Earth Science in 2026

The chart shows the D-index (discipline H-index) distribution of Earth Science scientists ranked by Research.com in 2026. The highlighted bar marks where Robert G. Loucks sits on this spectrum.

30 D-Index: 144 scientists 31 D-Index: 215 scientists 32 D-Index: 278 scientists 33 D-Index: 379 scientists 34 D-Index: 366 scientists 35 D-Index: 372 scientists 36 D-Index: 389 scientists 37 D-Index: 366 scientists 38 D-Index: 344 scientists 39 D-Index: 349 scientists 40 D-Index: 296 scientists 41 D-Index: 289 scientists 42 D-Index: 277 scientists 43 D-Index: 279 scientists 44 D-Index: 248 scientists 45 D-Index: 257 scientists 46 D-Index: 212 scientists 47 D-Index: 202 scientists 48 D-Index: 207 scientists 49 D-Index: 204 scientists 50 D-Index: 183 scientists 51 D-Index: 178 scientists 52 D-Index: 182 scientists 53 D-Index: 178 scientists 54 D-Index: 163 scientists 55 D-Index: 117 scientists 56 D-Index: 163 scientists 57 D-Index: 120 scientists 58 D-Index: 113 scientists 59 D-Index: 136 scientists 60 D-Index: 135 scientists 61 D-Index: 96 scientists 62 D-Index: 103 scientists 63 D-Index: 83 scientists 64 D-Index: 103 scientists 65 D-Index: 83 scientists 66 D-Index: 89 scientists 67 D-Index: 92 scientists 68 D-Index: 89 scientists 69 D-Index: 78 scientists 70 D-Index: 75 scientists 71 D-Index: 53 scientists 72 D-Index: 62 scientists 73 D-Index: 54 scientists 74 D-Index: 35 scientists 75 D-Index: 52 scientists 76 D-Index: 50 scientists 77 D-Index: 32 scientists 78 D-Index: 37 scientists 79 D-Index: 20 scientists 80 D-Index: 33 scientists 81 D-Index: 36 scientists 82 D-Index: 34 scientists 83 D-Index: 34 scientists 84 D-Index: 24 scientists 85 D-Index: 19 scientists 86 D-Index: 18 scientists 87 D-Index: 26 scientists 88 D-Index: 30 scientists 89 D-Index: 17 scientists 90 D-Index: 21 scientists 91 D-Index: 19 scientists 92 D-Index: 15 scientists 93 D-Index: 14 scientists 94 D-Index: 20 scientists 95 D-Index: 9 scientists 96 D-Index: 10 scientists 97 D-Index: 15 scientists 98 D-Index: 13 scientists 99 D-Index: 3 scientists 100 D-Index: 13 scientists 101 D-Index: 3 scientists 102 D-Index: 9 scientists 103 D-Index: 4 scientists 104 D-Index: 6 scientists 105 D-Index: 6 scientists 106+ D-Index: 98 scientists
30 D-Index 106+

This scientist: 46 D-Index — 55th percentile

55% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 106 D-Index or more.

Overview

Robert G. Loucks is affiliated with The University of Texas at Austin in the United States. Their research has a significant focus on Earth and Planetary Sciences and Engineering, with specific contributions in areas such as Mechanics of Materials, Earth-Surface Processes, Paleontology, Atmospheric Science, and Geology.

The main topics of their work include:

  • Hydrocarbon exploration and reservoir analysis
  • Geological formations and processes
  • Paleontology and Stratigraphy of Fossils
  • Geology and Paleoclimatology Research
  • Hydraulic Fracturing and Reservoir Analysis
  • Geochemistry and Geologic Mapping
  • Geological Studies and Exploration

Loucks has published extensively, with notable papers including:

  • Geologic characterization of the type cored section for the Upper Cretaceous Austin Chalk Group in southern Texas: A combination fractured and unconventional reservoir, 2020, published in AAPG Bulletin
  • Micropetrographic characterization of a siliciclastic-rich chalk; Upper Cretaceous Austin Chalk Group along the onshore northern Gulf of Mexico, USA, 2020, published in Sedimentary Geology
  • Machine learning classification of Austin Chalk chemofacies from high-resolution x-ray fluorescence core characterization, 2023, published in AAPG Bulletin
  • High-resolution hyperspectral-based continuous mineralogical and total organic carbon analysis of the Eagle Ford Group and associated formations in south Texas, 2020, published in AAPG Bulletin
  • Middle platform carbonate depositional systems and lithofacies patterns in the Lower Ordovician Ellenburger Group, Tobosa Basin in West Texas, U.S.A., and subsequent Sauk-Tippecanoe megasequence boundary meteoric karsting, 2023, published in Marine and Petroleum Geology

The predominant venues where Loucks publishes include:

  • Marine and Petroleum Geology
  • AAPG Bulletin
  • Abstracts with programs - Geological Society of America
  • SSRN Electronic Journal
  • Gulf Coast Association of Geological Societies Journal

Frequent collaborators in Loucks's research work comprise:

  • Robert M. Reed
  • Lucy T. Ko
  • Christopher K. Zahm
  • J. Evan Sivil
  • Kelly E. Hattori

Best Publications

  • Morphology, Genesis, and Distribution of Nanometer-Scale Pores in Siliceous Mudstones of the Mississippian Barnett Shale

    Robert G. Loucks;Robert M. Reed;Stephen C. Ruppel;Daniel M. Jarvie

  • Spectrum of pore types and networks in mudrocks and a descriptive classification for matrix-related mudrock pores

    Robert G. Loucks;Robert M. Reed;Stephen C. Ruppel;Ursula Hammes

  • Mississippian Barnett Shale: Lithofacies and depositional setting of a deep-water shale-gas succession in the Fort Worth Basin, Texas

    Robert G. Loucks;Stephen C. Ruppel

  • Paleocave carbonate reservoirs; origins, burial-depth modifications, spatial complexity, and reservoir implications

    Robert G. Loucks

  • Carbonate Depositional Sequences and Systems Tracts—Responses of Carbonate Platforms to Relative Sea-Level Changes

    C. Robertson Handford;Robert G. Loucks

  • Diagenetic controls on evolution of porosity and permeability in lower Tertiary Wilcox sandstones from shallow to ultradeep (200–6700 m) burial, Gulf of Mexico Basin, U.S.A.

    Shirley P. Dutton;Robert G. Loucks

  • Scanning-Electron-Microscope Petrographic Evidence for Distinguishing Organic-Matter Pores Associated with Depositional Organic Matter versus Migrated Organic Matter in Mudrock

    Robert G. Loucks;Robert M. Reed

  • Pore and pore network evolution of Upper Cretaceous Boquillas (Eagle Ford-equivalent) mudrocks: Results from gold-tube pyrolysis experiments

    Lucy T. Ko;Robert G. Loucks;Tongwei Zhang;Stephen C. Ruppel

  • Mississippian Barnett Formation, Fort Worth Basin, Texas: Bulk geochemical inferences and Mo–TOC constraints on the severity of hydrographic restriction

    Harold D Rowe;Robert G Loucks;Stephen C Ruppel;Susan M. Rimmer

  • Pore-types and pore-network evolution in Upper Devonian-Lower Mississippian Woodford and Mississippian Barnett mudstones: Insights from laboratory thermal maturation and organic petrology

    Lucy T. Ko;Stephen C. Ruppel;Robert G. Loucks;Paul C. Hackley

  • Regional Controls on Diagenesis and Reservoir Quality in Lower Tertiary Sandstones along the Texas Gulf Coast: Part 1. Concepts and Principles

    Robert G. Loucks;Marianne M. Dodge;William E. Galloway

  • Three-dimensional architecture of a coalesced, collapsed-paleocave system in the Lower Ordovician Ellenburger Group, central Texas

    Robert G. Loucks;Paul K. Mescher;George A. McMechan

  • Origin and characterization of Eagle Ford pore networks in the South Texas Upper Cretaceous shelf

    Lucy T. Ko;Robert G. Loucks;Stephen C. Ruppel;Tongwei Zhang

  • History of burial diagenesis determined from isotopic geochemistry, Frio Formation, Brazoria County, Texas

    Kitty L Milliken;L. S. Land;Robert G Loucks

  • Three-dimensional seismic geomorphology and analysis of the Ordovician paleokarst drainage system in the central Tabei Uplift, northern Tarim Basin, western China

    Hongliu Zeng;Robert Loucks;Xavier Janson;Guizhong Wang

  • Quantifying the origin and geometry of circular sag structures in northern Fort Worth Basin, Texas: Paleocave collapse, pull-apart fault systems, or hydrothermal alteration?

    Angela McDonnell;Robert G Loucks;Tim P Dooley

  • Regional Controls on Diagenesis and Reservoir Quality in Lower Tertiary Sandstones along the Texas Gulf Coast

    Robert G. Loucks;Marianne M. Dodge;William E. Galloway

  • Stuart City Trend, Lower Cretaceous, South Texas: a carbonate shelf-margin model for hydrocarbon exploration

    Don Gray Bebout Bebout;Robert G. Loucks

  • Preliminary Classification of Matrix Pores in Mudrocks

    Robert G. Loucks;Robert M. Reed;Stephen C. Ruppel;Ursula Hammes

  • Oceanographic and eustatic control of carbonate platform evolution and sequence stratigraphy on the Cretaceous (Valanginian–Campanian) passive margin, northern Gulf of Mexico

    Ryan M. Phelps;Charles Kerans;Robert G Loucks;Rui O.B.P. Da Gama

  • Ground penetrating radar imaging of a collapsed paleocave system in the Ellenburger dolomite, central Texas

    George A McMechan;Robert G Loucks;Xiaoxian Zeng;Paul Mescher

Frequent Co-Authors

Kitty L. Milliken
Kitty L. Milliken The University of Texas at Austin
Hongliu Zeng
Hongliu Zeng The University of Texas at Austin
William E. Galloway
William E. Galloway The University of Texas at Austin
Tongwei Zhang
Tongwei Zhang The University of Texas at Austin
George A. McMechan
George A. McMechan The University of Texas at Dallas
Ben A. van der Pluijm
Ben A. van der Pluijm University of Michigan–Ann Arbor
Paul C. Hackley
Paul C. Hackley United States Geological Survey
Andrew C. Aplin
Andrew C. Aplin Durham University
Jon E. Olson
Jon E. Olson The University of Texas at Austin
Robert L. Folk
Robert L. Folk The University of Texas at Austin

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