This book presents selected research highlights from the Seventh Argentine Geomorphology and Quaternary Studies Congress, hosted at Puerto Madryn, Northern Patagonia, Argentina by the Argentine Association of Geomorphology and Quaternary Studies (AACYG). The congress included special sessions, symposia, invited lectures and posters on the following topics: Quaternary stratigraphy and geochronology, paleontology (diatoms, mollusks, foraminifera, palynology, phytoliths, paleobotany, vertebrates), dendrochronology, climate change, paleoclimate, Pampean Quaternary paleolimnology, paleomagnetism, environmental magnetism, hydrogeochemical processes, geoarchaeology, geomorphology, structural geology and neotectonics, paleosurfaces, volcanism, geological hazards, assets, geomorphosites, and digital mapping. The Scientific Committee of the Congress has selected the papers published in this volume from more than 150 contributions in many different disciplines.

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**1.  **1. PREFACE

2. CONTRIBUTION OF LANDFORM ANALYSIS TO THE STUDY OF VEGETATION IN ARID ZONES (SAN JUAN PROVINCE, ARGENTINA)

3. PALEOENVIRONMENTAL RECONSTRUCTION OF THE DESTACAMENTO RÍO SALADO MEMBER, CANAL DE LAS ESCOBAS FORMATION (MIDDLE HOLOCENE), NORTHEASTERN BUENOS AIRES, ARGENTINA: SEDIMENTOLOGICAL AND PALEONTOLOGICAL EVIDENCE

4. GEOMORPHOLOGY OF THE PIEDMONT AREA AT THE CENTRAL-EAST REGION OF THE SERRANIAS OCCIDENTALES: FLUVIAL SYSTEMS AND GEOARCHEOLOGY. SAN LUIS, ARGENTINA.

5. SILICEOUS SPELEOTHEMS IN SEDIMENTARY BRECCIAS, SIERRAS AUSTRALES OF BUENOS AIRES PROVINCE, ARGENTINA.

6. RIVERS LONGITUDINAL PROFILES ANALYSIS AS INDICATORS OF NEOTECTONIC ACTIVITY. A CASE STUDY: THE CARRIZAL CREEK BASIN, COMECHINGONES RANGES, EASTERN PAMPEAN RANGES, SAN LUIS, ARGENTINA

7. THE PIEDRA MOVEDIZA (ROCKING STONE) OF TANDIL (PROVINCE OF BUENOS AIRES, ARGENTINA) AND THE PIEDRAS EQUILIBRISTAS (BALANCING ROCKS) OF PARAGUAY AND BRAZIL

8. LANDSCAPE CHARACTERIZATION OF THE TAFI VALLEY, TUCUMAN, ARGENTINA

9. THE ROLE OF LANDSLIDE RESEARCH IN THE QUATERNARY EVOLUTION OF THE CENTRAL ANDES (31°-34° S).

10. LANDSLIDE DISTRIBUTION AND CONTRIBUTING FACTORS IN A MOUNTAIN BASIN OF ARGENTINEAN CENTRAL ANDES (31º S)

11. ELECTRON PARAMAGNETIC RESONANCE AS A DATING TOOL FOR DETERMINING THE AGE OF MARINE MOLLUSK SHELLS

12. PIEDMONT GLACIATIONS, VOLCANISM AND LANDSCAPE EVOLUTION IN SOUTHERNMOST PATAGONIA, ARGENTINA.

13. TECTONIC INFLUENCES ON CHANNEL PATTERN AND LONGITUDINAL PROFILE CONCAVITY IN THE MIDDLE-LOW REACH OF THE SAN BARTOLOME RIVER, PROVINCE OF CÓRDOBA, ARGENTINA

14. GEOMORPHOLOGY AND SEDIMENTARY FACIES OF THE MARICÁ LAGOON (RIO DE JANEIRO STATE, BRAZIL)

15. GRANULOMETRIC AND COMPOSITIONAL CHARACTERIZATION OF THE HOLOCENE FORMATIONS IN THE NORTHEASTERN SECTOR OF THE ATLANTIC OCEAN COAST, OF THE PROVINCE OF BUENOS AIRES, ARGENTINA AND ITS RELATION TO HYDROGEOLOGICAL ASPECTS

16. URBAN GROWTH IN THE COAST OF PUERTO MADRYN COAST (CHUBUT, ARGENTINA): IMPACTS ON COASTAL DUNE FIELD AND IMPLICATIONS FOR COASTAL PLANNING

17. SANDSTONE GEOMORPHOLOGY: CERRO COLORADO, SIERRAS PAMPEANAS, CÓRDOBA, ARGENTINA

18. ENVIRONMENTAL RISK IN THE FLUVIO-AEOLIAN PLAIN OF THE REGION CENTER OF THE GENERAL SAN MARTÍN DEPARTMENT, CÓRDOBA

19. CONTENT AND DYNAMICS OF SILICOPHYTOLITHS AND SILICON IN PRISTINE SOILS AND AGROECOSYSTEMS IN THE SOUTHEAST OF THE PAMPEAN PLAIN, ARGENTINA.