2019 (In Review)

Chemical reactions, porosity, and microfracturing in shale during weathering: the effect of erosion rate . Gu, X., D.M. Rempe, W.E. Dietrich, A.J. West, T.-C. Lin, L. Jin, S.L. Brantley (2019): Geochimica Cosmochimica Acta (submitted) Cross-CZO

2019

Climate preconditions the Critical Zone: Elucidating the role of subsurface fractures in the evolution of asymmetric topography. West, N., Kirby, E., Nyblade, A., and Brantley, S.L. (2019): Earth and Planetary Science Letters, vol 513, p. 197-205

2018

Land use and lithology controls on export of nitrate and other solutes from headwaters to HUC10 watersheds. Callum Richard Wayman*, Tess A Russo, Jonathan M Duncan, Li Li, Brandon Forsythe, Beth Hoagland, Susan Brantley (2018): Abstract H13J-1861 presented at 2018 AGU Fall Meeting, Washington, D.C., 10-14 Dec

2018

Record of coupled hillslope and channel response to Pleistocene erosion and deposition in a sandstone headwater valley, central Pennsylvania. Del Vecchio, J., DiBiase, R.A., Denn, A.R., Bierman, P.R., Caffee, M.W., and Zimmerman, S.R. (2018): Geological Society of America Bulletin November/December, vol 130, no. 11/12, p. 1903–1917

2018

Stratigraphic control of landscape response to base-level fall, Young Womans Creek, Pennsylvania, USA. DiBiase, R.A., Denn, A.R., Bierman, P.R., Kirby, E., West, N., and Hidy, A.J. (2018): Earth and Planetary Science Letters 504, p. 163-173

2018

Particle fluxes in groundwater change subsurface shale rock chemistry over geologic time. Kim, H., Gu, X., and Brantley, S.L. (2018): Earth and Planetary Science Letters, 500:180-191

2018

Investigating climate change versus land use controls on hillslope erosion and valley sedimentation at the Cole Farm study watershed, central Pennsylvania. Perri Silverhart*, Roman A DiBiase (2018): Abstract H53N-1775 presented at 2018 AGU Fall Meeting, Washington, D.C., 10-14 Dec

2018

Comparing preferential flow between two catchments with contrasting lithologies. Qicheng Tang*, Jonathan M Duncan, Dacheng Xiao, Li Li, Li Guo, Henry Lin, David M Eissenstat (2018): Abstract H41O-2310 presented at 2018 AGU Fall Meeting, Washington, D.C., 10-14 Dec

2018

Stratigraphic control of landscape response to base-level fall, Young Womans Creek, Pennsylvania, USA. Roman A DiBiase*, Alison Denn, Paul R Bierman, Eric Kirby, Nicole West, Alan Hidy (2018): Abstract EP21D-2271 presented at 2018 AGU Fall Meeting, Washington, D.C., 10-14

2018

Sediment flux rates by tree throw in the Shale Hills Critical Zone Observatory and associated satellite sites in the Appalachian Mountains. Timothy S. White*, Ashlee Laura Denton Dere, Sarah Sharkey (2018): Abstract EP11D-2079 presented at 2018 AGU Fall Meeting, Washington, D.C., 10-14

2017

Shale across Scales from the Depths of Sedimentary Basins to Soil and Water at Earth’s Surface (Invited). Brantley, S.L. and Gu, X. (2017): 2017 American Geophysical Union Fall Meeting, New Orleans, LA, 11-15 Dec

2017

Reviews and syntheses: on the roles trees play in building and plumbing the critical zone. Brantley, Susan L., David M. Eissenstat, Jill A. Marshall, Sarah E. Godsey, Zsuzsanna Balogh-Brunstad, Diana L. Karwan, Shirley A. Papuga, Joshua Roering, Todd E. Dawson, Jaivime Evaristo, Oliver Chadwick, Jeffrey J. McDonnell, Kathleen C. Weathers (2017): Biogeosciences, 14, 5115-5142 Cross-CZO National

2017

A record of coupled hillslope and channel response to Pleistocene periglacial erosion in a sandstone headwater valley, central Pennsylvania. Del Vecchio, J. (2017): Master of Science, Geosciences, The Pennsylvania State University, p.

2017

A Quaternary record of periglacial surface processes preserved in a headwater valley in central Pennsylvania. Del Vecchio, J., DiBiase, R., Bierman, P., Denn, A. (2017): 2017 American Geophysical Union Fall Meeting, New Orleans, LA, 11-15 Dec

2017

DETECTING LANDSCAPE RESPONSE TO PERTURBATIONS BY CLIMATE AND BASE LEVEL IN CENTRAL PENNSYLVANIA USING IN-SITU 10Be AND 26Al. Denn, A. (2017): Master of Science, Geology, The University of Vermont, p. 86

2017

Cosmogenic nuclides indicate that boulder fields are dynamic, ancient, multigenerational features. Denn, Alison R., Bierman, Paul R., Zimmerman, Susan R. H., Caffee, Marc W., Corbett, Lee B., and Kirby, Eric (2017): GSA Today 28:4-10

2017

Shallow critical zone architecture of a headwater sandstone catchment quantified using near-surface geophysics. DiBiase, R., Del Vecchio, J.M., Mount, G.J., Hayes, J.L., Comas, X., Guo, L., Lin, H., Zarif, F., Forsythe, B. and Brantley, S.L. (2017): AGU-SEG Hydrogeophysics Workshop, Stanford, Calif., 24-27 July

2017

WEATHERING OF ROCK TO REGOLITH: THE ACTIVITY OF DEEP ROOTS IN BEDROCK FRACTURES. Hasenmueller, E.A., Gu, X., Weitzman, J.N., Adams, T.S., Stinchcomb, G.E., Eissenstat, D.M., Drohan, P.J., Brantley, S.L., and Kaye, J.P. (2017): 2017 Geological Society of America Fall Meeting, Seattle, WA, 22-25 October

2017

Subsurface particle loss during shale weathering can alter soil and rock chemistry. Kim, H., Gu, X., and Brantley, S.L. (2017): 2017 American Geophysical Union Fall Meeting, New Orleans, LA, 11-15 Dec

2017

Integrating geomorphological and time-lapse geophysical techniques to characterize hydrogeologic properties within shale and sandstone catchments at the Susquehanna Shale Hills Critical Zone Observatory, Pennsylvania, USA. Mount, G.J., DiBiase, R., Comas, X., Del Vecchio, J., Guo, L., Hayes, J., Forsythe, B., Brantley, S. (2017): AGU-SEG Hydrogeophysics Workshop, San Francisco, Calif., 24-27 July 2017

2017

Controls on deep critical zone architecture: a historical review and four testable hypotheses. Riebe, C. S., Hahm, W. J., Brantley, S. L. (2017): Earth Surface Processes and Landforms, 42 (1): 128–156 Cross-CZO National

2017

UNRAVELING HOW LANDSCAPE HETEROGENEITY ALTERS CONCENTRATION DISCHARGE BEHAVIOR IN CARBONATE HEADWATER STREAMS. Sullivan, P., Stops Jr., M., MacPherson, G.L., Li. L., and Dodds, W.K. (2017): 2017 Geological Society of America Fall Meeting, Seattle, WA, 22-25 October

2017

ASPECT-DEPENDENT FEEDBACKS BETWEEN REGOLITH PRODUCTION AND TRANSPORT AT THE SHALE HILLS CRITICAL ZONE OBSERVATORY. West, N., Kirby, E., Nyblade, A., and Brantley, S.L. (2017): 2017 Geological Society of America Fall Meeting, Seattle, WA, 22-25 October

2016

Colluvial signatures of Pleistocene sediment production in central Pennsylvania. Del Vecchio, J., Denn, A., DiBiase, R., and Bierman, P. (2016): 2016 Fall Meeting, American Geophysical Union, San Francisco, CA, 12-16 Dec.

2016

Surface and Subsurface Characteristics of Periglacial Landscape Modification in Central Pennsylvania . Del Vecchio, J., Martin, C., Mount, G.J., Hayes, J., Comas, X., and DiBiase, R. (2016): 2016 Geological Society of America Fall Meeting, Denver, CO, 25-28 September

2016

Old Rocks, New Data: Cosmogenic 10Be Analysis of a Relict Periglacial Boulder Field, Hickory Run State Park, Pennsylvania . Denn, A. and Bierman, P.R. (2016): 2016 Geological Society of America Fall Meeting, Denver, CO, 25-28 September

2016

Quantifying the spatial variability in critical zone architecture through surface mapping and near-surface geophysics (Invited). DiBiase, R., Del Vecchio, J., Mount, G., Hayes, J.L., Comas, X., Guo, L., Lin, H., Zarif, F., Forsythe, B., and Brantley, S.L. (2016): 2016 Fall Meeting, American Geophysical Union, San Francisco, CA, 12-16 Dec.

2016

Investigating the mechanisms of shale porosity development to understand hydrologic controls on hillslope scale weathering in a comparison across CZOs. Gu, X., Rempe, D., and Brantley, S.L. (2016): 2016 Fall Meeting, American Geophysical Union, San Francisco, CA, 12-16 Dec. Cross-CZO

2016

Evaluating the effect of lithology on porosity development in ridgetops in the Appalachian Piedmont. Marcon, V., Gu, X., Fisher, B., and Brantley, S.L. (2016): 2016 Fall Meeting, American Geophysical Union, San Francisco, CA, 12-16 Dec.

2016

Characterizing Subsurface Lithology and Hydrological Processes at the Susquehanna Shale Hills CZO Using Multi-scale Near-surface Geophysical Measurements. Mount, G., Guo, L., Comas, X., DiBiase, R., Hayes, J.L., Del Vecchio, J., Forsythe, B., Brantley, S.L., and Lin, H. (2016): 2016 Fall Meeting, American Geophysical Union, San Francisco, CA, 12-16 Dec.

2016

Pyrite Dissolution Leads Watershed Geomorphological Evolution . Sullivan, P.L., Hynek, S., Gu, X., and Brantley, S.L. (2016): 2016 Geological Society of America Fall Meeting, Denver, CO, 25-28 September

2016

Oxidative Dissolution under the Channel Leads Geomorphological Evolution at the Shale Hills Catchment . Sullivan, P.L., Hynek, S., Gu, X., Singha, K., White, T.S., West, N., Kim, H., Kirby, E., Clarke, B.; Duffy, C.; Brantley, S.L. (2016): American Journal of Science, 316 (10): 981-1026

2016

Comparing Rooting Depth and Niche Partitioning Between Shale and Sandstone Derived Soils in Central Pennsylvania Mixed Forests. Szink, I., Adams, T.S., Orr, A.S., Ruppel, M., Donnelly, S., Brazil, L.I., and Eissenstat, D.M. (2016): 2016 Fall Meeting, American Geophysical Union, San Francisco, CA, 12-16 Dec.

2016

Microclimate Controls on the Evolution of Critical Zone Architecture in the Susquehanna Shale Hills Critical Zone Observatory. West, N., Kirby, E., Nyblade, A., and Brantley, S.L. (2016): 2016 Fall Meeting, American Geophysical Union, San Francisco, CA, 12-16 Dec.

2016

Geomorphic equilibrium and the spatial variation of the geomorphic diffusivity at the Susquehanna Shale Hills Critical Zone Observatory. Zhang, Y., Slingerland, R.L., Duffy, C., Gu, X., Lin, H., and West, N. (2016): 2016 Fall Meeting, American Geophysical Union, San Francisco, CA, 12-16 Dec.

2015

Understanding How Nested Reaction Fronts under Watersheds Impact Flow, Transport, and Geomorphological Evolution: the Shale Hills Example . Brantley, Susan L and Pamela L Sullivan (2015): H53K-08 Flow, Mixing, and Reaction: Interactions and Coupling in Hydrological Systems II, presented at 2015 Fall Meeting, AGU, San Francisco, CA, 14-18 Dec.

2015

INVESTIGATION OF A RELICT PERIGLACIAL FEATURE: HICKORY RUN BOULDER FIELD, HICKORY RUN STATE PARK, PENNSYLVANIA. Denn A., Bierman P., and Kirby E. (2015): 2015 GSA Annual Meeting, Baltimore, MD, Geological Society of America Abstracts with Programs. Vol. 47, No. 7, p.550

2015

TOPOGRAPHIC AND COLLUVIAL SIGNATURES OF LITHOLOGY, BASE LEVEL, AND CLIMATE IN THE SHAVERS CREEK WATERSHED, PENNSYLVANIA. DiBiase, R.A., Del Vecchio, J., and Granke, S.B. (2015): Pardee Symposium, 2015 GSA National Meeting, Baltimore, MD, Geological Society of America Abstracts with Programs. Vol. 47, No. 7, p.832

2015

Laser vision: lidar as a transformative tool to advance critical zone science. Harpold, A. A., Marshall, J. A., Lyon, S. W., Barnhart, T. B., Fisher, B. A., Donovan, M., Brubaker, K. M., Crosby, C. J., Glenn, N. F., Glennie, C. L., Kirchner, P. B., Lam, N., Mankoff, K. D., McCreight, J. L., Molotch, N. P., Musselman, K. N., Pelletier, J., Russo, T., Sangireddy, H., Sjöberg, Y., Swetnam, T., and West, N. (2015): Hydrol. Earth Syst. Sci., 19, 2881-2897 Cross-CZO National

2015

REGOLITH PRODUCTION AND TRANSPORT IN THE SUSQUEHANNA SHALE HILLS CRITICAL ZONE OBSERVATORY: INSIGHTS FROM U-SERIES ISOTOPES (Invited). Ma L., Chabaux F., West N., Kirby E., Jin L., and Brantley S.L. (2015): Pardee Symposium, 2015 GSA Annual Meeting, Baltimore, MD, Geological Society of America Abstracts with Programs. Vol. 47, No. 7, p.832

2015

The interplay of regolith evolution and watershed hydrodynamics in a first order watershed. Sullivan P.L., Hynek, S., Gu, X., Singha, K., White, T., West, N., Kim, H., Clarke, B., Kirby, E., Duffy, C., and Brantley, S.L (2015): 2015 Goldschmidt Conference, Prague, CZ, 16-21 Aug

2015

Isotopic tracers of asymmetric watershed evolution. West, N. (2015): Geological Society of Washington, Meeting 1494, 11 March, 2015.

2015

TOPOGRAPHIC FINGERPRINTS OF MICRO-CLIMATE AND LITHOLOGY IN THE CENTRAL APPALACHIANS (Invited). West, N. and Kirby, E. (2015): Pardee Symposium, 2015 GSA National Meeting, Baltimore, MD, Geological Society of America Abstracts with Programs. Vol. 47, No. 7, p.831

2015

Microclimate controls on weathering and erosion in a temperate forest (Invited). West, N., Kirby, E., Brantley, S. (2015): 2015 Goldschmidt Conference. Prague, CZ.

2015

Water-regolith-energy Interaction in Landscape Evolution and Its Influence on Forming Asymmetric Landscape: An Example from the Shale Hills Critical Zone Observatory of Central Pennsylvania. Zhang, Yu, Rudy L Slingerland, Yuning Shi, Christopher Duffy and Nicole West (2015): EP33D-06 Landscape Evolution from a Critical Zone Science Perspective II, presented at 2015 Fall Meeting, AGU, San Francisco, CA, 14-18 Dec.

2014

Aspect-dependent variations in regolith creep revealed by meteoric ¹⁰Be. West, Nicole , Kirby, Eric, Bierman, Paul and Clarke, Brian A. (2014): Geology, vol 42 (6):507-510

2014

EP33B-3635 Using shallow seismic tomography to characterize patterns of near-surface weathering and the mobile-immobile regolith transition: Implications for the erodibility and morphology of hillslopes . Brian Clarke • Eric Kirby • Douglas Burbank • Nicole West (2014): 2014 AGU Annual Fall Meeting, San Francisco, CA, Dec 15-19th Cross-CZO

2014

ALIGNMENT AND DIVERGENCE OF PEDOLOGIC, GEOMORPHIC, AND GEOCHEMICAL DATA FOR HILLSLOPE SOILS IN CENTRAL PA. DYKMAN, Jordan Nicole, PAZZAGLIA, Frank J., PETERS, Stephen C., and BLAKE, Johanna M.T (2014): GSA Northeastern Section 49th Annual Meeting 23–25 March 2014

2014

Topographic stress and rock fracture: a two dimensional numerical model for arbitrary topography and preliminary comparison with borehole observations. Mirna Slim, J. Taylor Perron, Stephen J. Martel and Kamini Singha (2014): Earth Surface Processes and Landforms, 40(4):512–529

2014

Topographic Fingerprints of Hillslope Erosion in the Central Appalachians Revealed by Meteoric Beryllium-10. Nicole West (2014): Doctor of Philosophy, Geosciences, Pennsylvania State University, p. 159

2014

EP32B-06 Hillslope response to differences in aspect-related microclimate (Invited) . Nicole West • Eric Kirby (2014): 2014 AGU Annual Fall Meeting, San Francisco, CA, Dec 15-19th

2014

The interplay of regolith evolution and watershed hydrodynamics at Susquehanna Shale Hills CZO Critical Zone All Hands Meeting, Yosemite Park CA . Sullivan PL, Hynek S, Singha K, White T, Gu X, Russo T, Kim H, Duffy C, Clarke B, and Brantley SL. (2014): Presented at the NSF National Critical Zone Observatory Program All Hands Meeting, Yosemite, CA, 21-24 Sept., 2014

2014

EP13E-06 Rates of tree throw in Appalachian shale landscapes . Timothy White and Ashlee Dere (2014): 2014 AGU Annual Fall Meeting, San Francisco, CA, Dec 15-19th

2014

Aspect-related topographic asymmetry at the Susquehanna Shale Hills Critical Zone Observatory. West N., Kirby E., and Bierman, P. (2014): Presented at the NSF National Critical Zone Observatory Program All Hands Meeting, , Yosemite, CA, 21-24 Sept., 2014

2014

ASYMMETRIC TOPOGRAPHY REFLECTS VARIABLE TRANSPORT EFFICIENCY ON SOIL-MANTLED HILLSLOPES IN THE CENTRAL APPALACHIANS. WEST, Nicole and KIRBY, Eric (2014): GSA Northeastern Section 49th Annual Meeting 23–25 March 2014

2014

ASPECT-DEPENDENT REGOLITH FLUX REVEALED BY METEORIC ¹⁰BE. WEST, Nicole, KIRBY, Eric, and BIERMAN, Paul (2014): 2014 GSA Annual Meeting in Vancouver, British Columbia (19–22 October 2014)

2014

ARBORTURBATION RATES IN THE APPALACHIAN MOUNTAINS. WHITE, Tim, SHARKEY, Sarah, and DERE, Ashlee L (2014): GSA Northeastern Section 49th Annual Meeting 23–25 March 2014

2014

ARBORTURBATION RATES OF SOIL ON APPALACHIAN MOUNTAIN SHALE LANDSCAPES. WHITE, Timothy S., DERE, Ashlee L., and SHARKEY, Sarah (2014): 2014 GSA Annual Meeting in Vancouver, British Columbia (19–22 October 2014)

2013

Cross-CZO Contrasts: Aspect Controls and Critical Zone Architecture. Clarke, B.A., Kirby, E., Burbank, D.W., West, N. (2013): Abstract H43L-07presented at 2013 Fall Meeting, AGU, San Francisco, CA, 9-13 Dec. Cross-CZO

2013

Regolith production and transport in the Susquehanna Shale Hills Critical Zone Observatory, Part 1: Insights from U-series isotopes. Ma, L., Chabaux, F., West, N., Kirby, E., Jin, L., and Brantley, S. (2013): Journal of Geophysical Research, Earth Surface 118 (2) 722-740

2013

Neogene rejuvenation of central Appalachian topography: Evidence for differential rock uplift from stream profiles and erosion rates. Miller, S.R., Sak, R.B., Kirby, E., and Bierman, P.R. (2013): Earth and Planetary Science Letters 369-370:1-12

2013

Topographic fingerprints of hillslope erosion in the North American Appalachians. Nicole West and Eric Kirby (2013): EGU General Assembly 2013

2013

Regolith production and transport at the Susquehanna Shale Hills Critical Zone Observatory: Part 2 - Insights from meteoric ¹⁰Be. West, N., Kirby, E., Bierman, P., Slingerland, R., Ma, L., Rood, D., and Brantley, S. L. (2013): Journal of Geophysical Research, Earth Surface 118:1-20

2013

Going Steady: Using multiple isotopes to test the steady-state assumption at the Susquehanna Shale Hills Critical Zone Observatory (Invited) . West, N., Kirby, E., Ma, L., Bierman, P.R. (2013): Abstract H54A-03 presented at 2013 Fall Meeting, AGU, San Francisco, CA, 9-13 Dec.

2013

Quantifying Aspect Control on Transport Efficiency and Mobile Regolith Flux at the Susquehanna Shale Hills Critical Zone Observatory . WEST, Nicole, KIRBY, Eric, BIERMAN, Paul R., and CLARKE, Brian (2013): GSA Annual Meeting

2013

Bioturbation and Erosion by Tree Throw in Forested Landscapes, Appalachian Mountains . WHITE, Timothy S., SHARKEY, Sarah, and DERE, Ashlee (2013): GSA Cordilleran Section Meeting

2013

A New Hydrologic-Morphodynamic Model for Regolith Formation and Landscape Evolution. Zhang, Y., Slingerland, R.L., Duffy, C. (2013): Abstract EP33A-0858 presented at 2013 Fall Meeting, AGU, San Francisco, CA, 9-13 Dec.

2012

Testing hillslope transport models in the Susquehanna Shale Hills Critical Zone Observatory. West, N., Kirby, E. (2012): AGU Annual Fall Conference Proceedings

2011

Fully coupled approach to modeling shallow water flow, sediment transport, and bed evolution in rivers . Li S., and Duffy, C. J. (2011): WATER RESOURCES RESEARCH VOL. 47, W03508,

2011

Bioturbation of forested shale soils by tree throw in the Appalachian Mountains. Mann, E., Downy, K., Dere, A.L., White, T. (2011): AGU Annual Fall Conference Proceedings

2011

Using meteoric 10Be to estimate soil residence times and erosion rates at the Susquehanna Shale Hills Critical Zone Observatory, PA. West, N., Kirby, E., Bierman, P., (2011): European Science Foundation Conference on Cosmogenic Nuclides, Obergurgl, Austria, August, 2011

2011

Preliminary estimates of regolith generation and mobility in the Susquehanna Shale Hills Critical Zone Observatory, Pennsylvania, using meteoric 10Be. West, N., Kirby, E., Bierman, P., Rood, D. (2011): Applied Geochemistry v.26, S146 – S148

2011

Preliminary estimates of regolith generation and mobility in the Susquehanna Shale Hills Critical Zone Observatory, Pennsylvania, using meteoric 10Be. West, N., Kirby, E., Bierman, P., Rood, D., (2011): International Symposium on the Geochemistry of the Earth’s Surface, Boulder, CO, June, 2011

2011

Toward an understanding of landscape change in the Susquehanna Shale Hills Critical Zone Observatory. West, N., Kirby, E., Bierman, P., Slingerland, R., Ma, L., Jin, L., Brantley, S., (2011): All Hands Meeting, Oracle, AZ, May, 2011

2011

Constraints on regolith formation and erosion rates at the Susquehanna Shale Hills Critical Zone Observatory, PA, determined using meteoric 10Be. West, N., Kirby, E., Bierman, P.R., Rood, D.H. (2011): AGU Annual Fall Conference Proceedings

2010

Regolith production rates calculated with uranium-series isotopes at Susquehanna/Shale Hills Critical Zone Observatory. Ma, L., Chabaux, F., Pelt, E., Blaes, E., Jin, L., and Brantley, S.L. (2010): Earth and Planetary Science Letters vol 297, 211-225.

2010

Soil production is faster on south-facing slopes in the Susquehanna/Shale Hills Critical Zone Observatory due to periglacial, vegetative, and climate factors (Invited). Jin, L., Eissenstat, D., Lin, H., Chabaux, F.J., Ma, L., Brantley, S.L. (2010): AGU Annual Fall Conference Proceedings

2010

Mineral weathering and elemental transport during hillslope evolution at the Susquehanna/Shale Hills Critical Zone Observatory . Jin, L., Ravella, R., Ketchum, B., Bierman, P.R., Heaney, P., White, T.S. and Brantley, S.L. (2010): Geochimica et Cosmochimica Acta 74 (13):3669-3691.

2010

Using meteoric 10Be to track soil erosion and transport within a forested watershed, Susquehanna Shale Hills Critical Zone Observatory, PA. West, N., Kirby, E., Bierman, P.R., Rood, D.H. (2010): AGU Annual Fall Conference Proceedings