Terroir 2006 banner
IVES 9 IVES Conference Series 9 Geological characterization of plot belonging to the left bank terraces terroir of the Gaillac vineyard (Tarn, Midi-Pyrénées). Consequences on determination of choice of vegetative material

Geological characterization of plot belonging to the left bank terraces terroir of the Gaillac vineyard (Tarn, Midi-Pyrénées). Consequences on determination of choice of vegetative material

Abstract

Detailed geological analyses of a plot belonging to the « AOC Gaillac » area have been carried out. This plot belongs to the left bank terraces of the Tarn River which coinciding with one of the three main terroirs of the AOC area. It is localised on the rissian-aged (≈ 200 000 yrs B.P.) terrace composed of alluvial shelves crosscut by small valleys where the Oligocene (ca. 28 My) marly molassic basement outcrops. It spatially coincides with the terrace slope on which typical luvisols have developed composed by an eluvial silty-sandy horizon (up to 60 cm) overlying an illuvial pebble-sand level (up to 3 m) where clays and ferrous oxides are moderately accumulated. The slope terrace appears to be a unit with great potential for production of high quality wine because of its high topographic gradient combined with the thick permeable pebble-sand sequence, both triggering a high drainage coefficient. Further, combination of physical and chemical results – acidic pH and very low CEC – permits to select Gravesac rootstock adapted to well-drained acidic soils and Syrah/Fer Servadou climatic-adapted grapevine varieties as the most suitable vegetative material.

Download the PDF

DOI:

Publication date: January 12, 2022

Issue: Terroir 2006

Type: Article

Authors

Pierre COURJAULT-RADE (1), Marguerite MUNOZ (1), Eric MAIRE (1) and Nicolas HIRISSOU (2)

(1) Laboratoire des Mécanismes de Transferts en Géologie (LMTG), UMR 5563 CNRS, 14, avenue E. Belin, 31400 Toulouse, France
(2) Domaine du Moulin, chemin de Bastié, 81600 Gaillac, France

Contact the author

Keywords

AOC Gaillac, geology, morphology, vegetative material, terroir effect

Tags

IVES Conference Series | Terroir 2006

Citation

Related articles…

Discrimination of white wines by Raman spectroscopy coupled with chemometric methods

France is the largest exporter of wine in the world. The export turnover is estimated at 8.7 billion euros in 2017 for 13 million hectoliters sold. This lucrative business pushes scammers to increase the value of some low-end wines by cheating on their appellations, quality or even their origins. These facts lead to losing 1.3 billion euros each year to the European Union’s wine and spirits companies.
Read More

The Cognac industry: history, successes and challenges

With alcohol consumption steadily declining, the growing popularity of dry january, a fiercely competitive environment, high dry matter inflation, economic upheavals, commercial uncertainties… The wine industry must adapt and offer products that meet consumer expectations, without denying their historical singularities.

Read More

Classification and prediction of tannin botanical origin through voltammetry and machine learning approach

The classification of enological tannins has gained importance following the OIV’s requirement to include their botanical origin on product labels (OIV-OENO624-2022).

Read More

“Un grande theatro di amenissimi colli”: “tutti coltivati et abondanti di frutti eccellentissimi e di buonissime viti”

[lwp_divi_breadcrumbs home_text="IVES" use_before_icon="on" before_icon="||divi||400" module_id="publication-ariane" _builder_version="4.19.4" _module_preset="default" module_text_align="center" text_orientation="center" custom_margin="65px||18px||false|false"...
Read More

From local classification to regional zoning-the use of a geographic information system (GIS) in Franconia / Germany. Part 1: specific GIS applications in viticulture

En vue d’une production économique de qualités des raisins optimales une connaissance des informations les plus différentes est importante. Les nouvelles technologies, telles qu’un SIG permettent de réunir les informations sur le terrain, la nature du sol, le danger d’érosion, le climat, la végétation, l’hydrographie, l’apparition de nuisible et de maladies, etc. Sur la base de cartes topographiques un SIG permet une vaste analyse, une appréciation des rapports complexes ainsi qu’une représentation cartographique. Sur la base de modélisations en trois dimensions du terrain avec le SIG, les ensembles de données saisies ainsi que leur classification au niveau local peuvent être utilisés dans la production de zonages régionaux.

Read More