Haibo Zou
Associate Professor

Office: Room 214
Petrie Hall
Tel: (334) 844-4315

Petrogenesis of igneous rocks; U-Th disequilibrium; ND, SR, Pb and O isotope and trace element geochemistry; chemical geodynamics; East Asian geology; time scales of magma chamber processes; volcanology; quantitative geochemical modeling; mass spectrometry, including thermalionization, secondary-ionization, and plasma-ionization mass spectrometry.

Haibo Zou teaches Physical Geology and Igneous Petrology at the undergraduate level as well as graduate courses in igneous petrology and geochemical modeling.

Dr. Zou's varied research interests include the petrogenesis of igneous rocks; U-Th disequilibrium; Nd, Sr, Pb, and O isotope and trace element geochemistry; chemical geodynamics; East Asian geology; time scales of magma chamber processes; volcanology; quantitative geochemical modeling; mass spectrometry, including thermal-ionization, secondary-ionization, and plasma-ionization mass spectrometry. He has an active NSF-funded project, “Melting Beneath Continents in Diffuse Igneous Provinces.” More specific research interests are given as follows.

(1) Petrology and Chemistry of the Earth and Planets
The goals of this study are to achieve a better understanding of the differentiation and chemical evolution of the Earth and other planets, the geochemical aspects of crust-mantle interaction, the dynamics and evolution of magma systems, and the formation of the crust and the process of weathering, through the integrated study of isotopic compositions (Sm-Nd, Rb-Sr, Lu-Hf, and U-Th-Pb isotopic systematics) and traceelement concentrations and ratios in igneous, sedimentary, and metamorphic rocks.
The main tools in this research are 3 types of mass spectrometers: thermal ionization mass spectrometers, secondary ion mass spectrometers, and inductively coupled plasma mass spectrometers. Mass spectrometry has wide applications in almost all the fields of natural sciences, including Earth and space sciences, and life sciences. (Essentially, there is no boundary between the different fields of natural science; there is only overlap between disciplines. Interdisciplinary research is the way to go).
My recent work has focused on the use of long-lived isotopes, extinct short-lived isotopes, and equations to study (1) mantle dynamics and processes using uranium-thorium isotopic disequilibrium, (2) early (Hadean) Earth and moon and other terrestrial planets, and (3) early solar processes.

(2) Geochemical Modeling 
Just like mass spectrometry, mathematics has broad applications in all fields of natural sciences. To quantify physical, chemical, geological, and biological processes is always an important goal in natural sciences. The main tools in this part of my research are ordinary and partial differential equations with initial and boundary conditions, and numerical analysis. The fascinating aspect of mathematical modeling is a deep understanding of not only mathematics but also the related knowledge of physics, chemistry, and geology. Recently I have been working on models to describe trace element fractionation and uranium-thorium disequilibrium during the processes of melt generation and transport. I also wrote a book, "Quantitative Geochemistry," for graduate students and researchers. 

(3) Paleoclimates Constrained from Hard Rocks 
Although much of my early research focuses on deep Earth processes, my recent research has been extended to Earth surface studies of Miocene paleosols (Zou et al., 2004) and Neoproterozoic glaciations (e.g., Xu et al., 2005; Xu et al., 2008), as the powerful tools that I have learned (isotopes, trace elements, clean-lab chemistry, mathematics, programming languages) are useful for the studies of not only deep processes but also surface processes.
As a byproduct of the research on continental basalts, we demonstrated that the unusual tridymite-hercynite xenoliths in Niutoushan basalts represent preserved aluminous lateritic paleosols, which are not genetically related to the host tholeiites. These lateritic paleosols with strongly desilicated minerals were formed by intense chemical weathering under warm and humid tropical conditions in SE China during the interval from 17 to 15 Ma. The formation age of the paleosols corresponds to a period characterized by slow uplift of the Himalayan-Tibetan Plateau region (and thus less consumption of CO 2 ) after 17 Ma, and eruptions of the 17-15 Ma Columbia River flood basalts, the Vogelsberg basalts, and the East China basalts (and thus more input of CO 2 into the atmosphere). The tridymite-hercynite xenoliths in the Niutoushan basalts thus preserve novel evidence of extraordinary climatic greenhouse conditions in the middle Miocene that would otherwise have been lost by erosion of the paleosols (Zou et al., 2004). In favorable circumstances, hard rocks may contain useful information about paleoclimate conditions! 
My approach to research is to combine accurate measurements by mass spectrometry with solid mathematical modeling. I pay special attention to quantitative models, innovative experimental methods, and bold/creative (sometimes a bit crazy) interpretations. A combined experimental and theoretical study can solve scientific problems more thoroughly and elegantly.

Zou, H.B., Fan, Q.C., and Yao , Y.P., 2008, U–Th systematics of dispersed young volcanoes in NE China : Asthenosphere upwelling caused by piling up and upward thickening of stagnant Pacific slab. Chemical Geology, v. 255, p. 134-142.

Zou, H.B., McKengan, K.D., Xu, X.S. and Zindler, A., 2004, Fe-Al-rich tridymite-hercynite xenoliths with positive cerium anomalies: Preserved lateritic paleosols and implications for Miocene climate. Chemical Geology, v. 207, p. 101-116.

Zou, H.B., Reid, M.R., Liu, Y.S., Yao , Y.P., Xu, X.S. and Fan, Q.C., 2003, Constraints on the origin of historic potassic basalts from northeast China by U-Th disequilibrium data. Chemical Geology, v. 200, p. 189-201.

Zou, H.B., Zindler A., and Niu Y., 2002, Constraints on melt movement beneath the East Pacific Rise from 230Th-238U disequilibrium. Science. 295, p. 107-110.

Zou, H.B., and Reid M.R., 2001, Quantitative modeling of trace element fractionation during incongruent melting. Geochimica et Cosmochimica Acta, vol. 65, p. 153-162.

Zou, H.B., Zindler A., Xu, X.S., and Qi, Q., 2000, Major and trace element, and Nd, Sr, Pb isotope studies of Cenozoic basalts in southeastern China : Mantle sources, regional variations and tectonic significance. Chemical Geology, vol. 171, p. 33-47.

Zou, H.B., and Zindler, A., 2000, Theoretical studies of 238U-230Th-226Ra and 235U-231Pa disequilibria in young lavas produced by mantle melting. Geochimica et Cosmochimica Acta , vol. 64, p. 1809-1817.

Zou, H.B., 2000, Modeling of trace element fractionation during non-modal dynamic melting with linear variations in mineral/melt distribution coefficients. Geochimica et Cosmochimica Acta , vol. 64, p. 1095-1102.

Zou, H.B., 1998, Trace element fractionations during modal and nonmodal dynamic partial melting and open system melting: a mathematical treatment. Geochimica et Cosmochimica Acta , vol. 62, p. 1937-1945

Zou, H.B., and Zindler A. (1996) Constraints on the degree of dynamic partial melting and source composition using concentration ratios in magmas. Geochimica et Cosmochimica Acta , vol. 60, p. 711-717.

Last updated: 10/01/2013